The reason people dislike/hate the Eula (mostly server owners/staff) is because there are no clear rules on what does and doesn't violate the Eula. Not to mention that the Eula is almost constantly changing, and the only way to get information is by sending an Email with questions to Mojang's Enforcement team.
The Eula changes first started out with no pay to win features (such as spending real money for kits), but soon grew into a big mess. Popular solutions to keep players donating to cover server costs
were un-bans, the ability to ride pets on servers other than lobbies, the ability for mounts/pets to move at faster speeds (even in lobbies), the ability to disguise into a pet that can originally fly (even if you can't fly while disguised), and certain global boosters. All of these popular solutions are no longer allowed with the Eula changes. The next big thing that changed was voting. Voting for in-game currency and other things (other than cosmetics) is not allowed as players spend their time to vote, which is considered a hard currency.
With those and many more restrictions put in place by the Eula (so much for
"the only limit is your imagination"), the only way for servers to make money is by selling cosmetics. Smaller and medium servers depend on donations to say alive and cover server costs. While most small servers aren't worrying about the Eula and being blacklisted (as there are too many), medium servers either decide to: a) not follow the Eula or b) try to comply, lose money, and shutdown because the majority of players aren't interested in cosmetics.
Minetime is an example of a medium server that decided to shutdown because they were blacklisted for not being Eula compliant. Large servers don't worry about being blacklisted because it would cause their large player base to retaliate, and some large servers even have some features that aren't allowed with the Eula such as boosts if you're in a game with a VIP/MVP.
This is why people dislike and hate the Eula. It put too many restrictions on a game that used to have none.
