I voted neutral, because I love the concept. On my first cruise (SS Emerald Seas back when I was in 6th grade - so around 1982 or so) we were seated with another family who had a daughter between my and my sister's age and we had a blast. Dinner was never awkward or anything beyond initial shyness the first night. Probably because we had been well prepared by a
travel agent in the church my dad worked at (I think he helped my parents book everything, but I'm not sure) that dining while cruising was different from dining in a restaurant on land - the multiple courses, the doting by the servers (though none of us would have dreamed of asking to have our food cut up - not even my six-year old sister), that we would be seated with at least one other family, that there was a dress code, etc.
I've been on group cruises where we had several tables and rotated among them, so you were usually with someone you hadn't had a meal with yet, though sometimes there were repeats. It only got awkward one time when I was at a table with people in our group but who I had not met at all yet. Those people steered the conversation in a direction I was not comfortable with - and it was all people I had not had the chance to interact with and did not want to disclose exactly WHY I didn't appreciate the turn of the conversation so I opted to remain silent and leave the table ASAP.
When we went on a family cruise to celebrate our parents 45th anniversary, we were on the Dream and Daddy opted to get a concierge cabin since we were all staying together. As concierge we were put at our own table, though we didn't realize that would happen. Not a huge thing, though we missed meeting new people. Of course the father at the table thisclose to ours at Royal whichever one it is on the Dream decided we might as well have been sitting together. THAT was awkward because it wasn't like we were going to be right there with them again.
I've done two solo cruises - both on Disney. The first time, I was on the ship where my sister was based while she was onboard. She had gotten permission to eat with me, and the dining room manager changed my table location so that we had a table to ourselves mainly for HER as she had to wear her whites every night and he didn't want her to be put in the position of having to answer tons of questions or of us not being able to have "real" conversation.
The second was on the ship she was based on, but while she was on vacation so I was truly solo. Because of the awkward thing with the group cruise, I admit I had requested my own table, but I didn't make a big deal about it by running to dining changes to verify my request was met. I figured que sera sera. Well, I WAS put at a table with others. Two guys each cruising solo - and I swear they just threw the three solos together regardless of anything. But yet the magic worked for the guys as they immediately bonded over real estate, conservative politics, and a couple of other things that I don't remember because I had already tuned out of their conversation and desperately wished I'd taken my nook. Escaped as soon as I could that first night. I didn't have to worry about the second night as I was doing Palo (usually my first night tradition, but given that the first night was Valentine's Day I opted to spare myself the sight of couples all over). But the third night, I thought I would go to Cabanas - only to discover that it was like they put the menu together by saying "What are Beth's least favorite things on each menu?" and putting them on there. So I went to the MDR I was scheduled to go to while first seating was happening and spoke with the Dining Room Manager who said it would not be a problem to put me at my own table, so I had my own table the rest of the cruise and life was grand.
So... Generally if I'm with someone, I like the shared aspect of it because even if the tablemates are duds, I've got someone to talk with. As a solo, I'd honestly rather be by myself because there are now two experiences I've had being solo and getting stuck at a table with people who I not only have nothing in common with but who actively make me uncomfortable by their conversation direction and/or views. (Put it this way - would you want to have to spend a week dining with people who don't think you should be allowed to exist because of who you were created to be?)