I installed it last night, even though I'm not a developer (and that's a recipe for disaster, but oh well). WEIRD. Waiting to hear from Apple about whether this was actually a big mistake or some odd new strategy.
I think it’s kind of laughable that so many sites like this assumed that Apple made the changes to the way betas were installed in order to “gatekeep” them for only people with a subscription, and then when Apple made the first Developer Beta of iOS 17 available to non-paid developers, they continued to reinforce their prior assumptions with yet further assumptions that Apple must have done this as some sort of blunder. It’s not Apple that’s messed up here, it‘s these sites that made to many assumptions and now look silly trying to backpedal. The thought apparently never crossed any of their minds that perhaps Apple was simply changing the way Developer Betas were installed to make it easier, not for some kind of malicious reason to gatekeep it. This is why you shouldn’t assume.