I don't believe anyone has said (I certainly haven't) that there shouldn't be a mechanism to review remuneration and terms* to ensure they're treated fairly - personally I think this is how it should operate - I just don't believe they should strike.
*this already happens in areas and I believe some of the current striking workers have already been offered but rejected what the independent pay body recommended...
Lots of people I think are forgetting that pay (actual £) is only one part of the picture, many of these groups are public sector so essentially have a guaranteed job for life, that's worth a lot compared to private sector (or one that's disaster proof eg during covid, furlough wasn't a thing in the public sector, even for those whose work was put on hold).
There's also the argument of "hey my real terms pay has decreased" over x years - well yes, a) that was intentional in places as it was considered that certain professions were overpaid (and why should the general public be asked to overpay for their services ie through tax?) and b) that's what inflation is all about and at present, we're all suffering.
Then there's the pension... the list goes on but people ignore it and simply resort to simplistic arguments, identity politics, and bullying tactics (eg strikes).