I was going to Pride (in London and Brighton) from my teens back in the 80s (and as far back when it was an actual political march, not a big corporate kinkfest. Imagine that? And back in the 90s even they used to have the big march and then the localised events, like on Clapham Common, so it wasn't shops everywhere or anything.)
Yes, there were always blokes in leather chaps and a few bare arses, lots of drag queens, lots of campery and fun, plus there were a lot more lesbians. But fetish really wasn't most of it and it did used to be fairly family-friendly, at least during the day. Got a bit raunchier at night obvs.
But there certainly weren't the TQ+ furries and pups (which are obvious draws to naive kids), nappy fetishists or old blokes dressed as babies, cock images & dildos, everywhere, straight blokes claiming to be lesbians (back then "trans" was those Jan Morris middle aged military type transvestites having their conservative tea parties over at the Beaumont society in their pearls, which they clutched often at the thought of the disgusting gays and openly said they didn't want to be associated & didn't believe in gay rights).
And the police weren't leading pups around on leads and no, if you walked out of Piccadilly Circus tube with your kids, while in later years you'd see the crowds, plenty of gay men, a few drag queens and hear lots of whistles, sure, but you wouldn't be especially likely to see serious fetishists or kinksters, though sure, you might see like one bare arse if you were unlucky. It's really not "pearl clutching" or prudish to notice the difference and how it's changed over time.