No, I personally wouldn't.
1. I wouldn't need/want anything after just doing major shopping a month earlier
2. Our family celebrates Christmas different than Thanksgiving. Christmas we host an open house everyone comes style event and people are at our house until later in the evening. Thanksgiving has always been a set time sit down meal early in the afternoon with everyone leaving by early evening so shopping doesn't change my family time at all. I would never cut out family time to get a deal, but stores opening at 5 on Thanksgiving doesn't change that. If you are blowing off your family to shop, then you need to check your priorities, but I just think the Thanksgiving holiday is one celebrated earlier in the day allowing people the time to shop without changing that. I think that stores being open on Christmas day will never be popular.
Nobody is being forced to work on Thanksgiving.
They took a job that doing it is a known part of the job. Just like people who work Sat/Sun(something I cannot imagine my dh having to do since that is when we spend family time) know when they take certain jobs. Some people don't have an option and it is the only job available, but lots of people hold jobs that are not ideal for their life(and it isn't just one day out of the year), but they need them so they have to sacrifice wants for needs. Then others enjoy working those days b/c it isn't a big deal to them.
If you are against everything being open besides emergency places(hospitals, firehouses, police stations) then fine more power to you, but if you stop at the gas station or are ok with people taking holidays then what is the difference. Nobody has to vacation on Holidays, but they choose to(and it isn't just to be with extended family). Why are hotel staff, park employees, airlines, restaurants, movie theaters employees, gas stations(back in the day hardly any of those were open on thanksgiving) family time less valuable than a person who works at Target?
Just seem laughable to complain and I dislike hypocrisy(not saying you specifically Disney1990) but many who complain are. I think most of the anti BF crew would run into Walgreens or another drug store to grab something as small as a pack of gum several years ago without thinking twice about those employees, but now that it is a popular to be anti BF they are on their soapbox condemning people who shop