The question posed was comparing players who actually cost £100m as that is the metric constantly used to beat Grealish with and I think it's very likely there are pressures associated with being a £100m player. Bale, Hazard, Kane, and Bellingham didn't cost £100m and I've never heard criticism of Grealish portrayed as those who cost over £80m.
It's hugely ironic with the fanboy slur that you are quoting being "more successful(individually)" all of sudden; I'm interested in what Manchester City win rather than individual awards, trinkets and baubles.
Grealish has won 3 Premier Leagues, 1 Champions League, 1 FA Cup, 1 UEFA Super Cup and 1 FIFA Club World Cup more than Declan Rice.
Griezmann won 1 Copa del Rey 2020–21 and was a Supercopa de España runner-up: 2021 at Barcelona!!!
A club buys a player with the club's money for the benefit of the club:
Mbappe signed for PSG for £166m and scored a lot goals, PSG didn't win the CL, didn't win the French League every year. And Mbappe left for a free at the end of his contract.
Grealish signed for City for £100m, won a lot of free kicks, City won the treble and secured 4 league titles in a row. And if Grealish is sold within the next 12 months, there will be a transfer fee.
Who was the better value signing? And which club will be happier with their investment?