While the whistle should have blown 15 seconds after the start of play at 2-3, this is 100% on the 11 on the pitch for not clearing any advances Bournemouth attempted. Parrying it out of play, committing a foul at midfield, literally ANYTHING but what they allowed.
That being said, it was an absolutely abysmal last 20 minutes against a side notoriously poor on the last 20 minutes, and there's plenty of blame to go around.
I could have saved a bunch of internet kilobytes and summed it in two words, though.
Everton that.