I find the Simon Dawson hate so funny because especially this year I can't think of a time at the three shows I've attended where he's been the cause of a genuine fuck-up, and any minor slips are in full "Nicko would have done that sometimes too lmao" mode like dragging a bit on the extended Seventh Son interlude. Adrian's fucked it, Jan's fucked it, Bruce has fucked it. Are they not cutting it either?
Either way, the band seems to disagree with you and you can tell they enjoy working with him onstage.
Maiden has never performed these technically perfect performances night after night, they're a machine that sometimes gets ahead of itself or drags a bit and then comes roaring back in. It's part of why I enjoy their live shows so much.
Given that, I think Simon is doing an excellent work, it cannot be easy to join a band that has a habit of losing itself in the music, and stepping in for a bloke who's adjusted to and shaped that chaos machine over 42 bloody years.
The man's playing stadiums, headlining festivals, and being recorded multiple times for live albums, and visibly having a good time doing it. The band is clearly happy working with him and happy with how he's playing. People could really stand to be a little more respectful.