imho it is more than just the 60 day FP+ benefit that had people wanting to stay onsite. DME, extra magic hours (now reduced to 30 mins and deluxe only for evenings), resort airline checkin, package delivery to your resort from the parks, free Magicbands ... it is the combination of these lost perks when combined with the higher prices of staying onsite that would have me considering staying offsite if I weren't DVC.
And for me,
Genie+ by itself perhaps isn't a huge cost - although it certainly isn't cheap if you opt to buy it everyday for a family of 4, the cost is $420 more for a 7 day trip. It also doesn't include the IA$ rides, meaning more money if you want to ride any of those w/o waiting. Something that previously would have been free for rides like 7DMT.
Then combine that with the increase in AP costs, for the Sorcerer pass it has gone up 25%. The added cost of Photopass now being $99 ... It has all happened in a matter of a few short weeks that it will cost me nearly $2000 more per year or about 70% more to get a similar experience to what I was getting - and some perks are just gone. So I'm being asked to pay significantly more and getting less with regard to perks. In practice I probably won't get Genie+ everyday, so it isn't literally $2000 more, but it will still definitely cost more.
This isn't resistance to change - resistance to change would be being upset that Fastpass is going from paper FPs to digital FP's on
MDE. Most people who are unhappy imho are upset because there is a significant increase in costs and less value for what you're getting.
As a DVC member and AP holder (renewed in June 2021 before a lot of this was announced), I'm still planning to go to Disney but I'll certainly be changing how I spend my money at the parks to reduce the increases and longer term, maybe reconsider going to Disney parks all the time, even with DVC I can use it to go to Universal or explore other parts of Orlando. Maybe make it an every other year or more visit.