Sarah O'Connor has coined a new word:
Qualitynesia = forgetting something was better in the past when it objectively was
[her example: recorded sound quality - spotify's compressed sound files carry less info than old CDs & as such have worse sound]
However, fellow Masto-folk, I'm sure you'll have you own candidates for 'Qualitynesia'...
see also @pluralistic 'Enshitification'.