Not an iPhone user but having no issues. I have found that among questionably coded forum software, sometimes requesting the desktop version of the website helps ... a lot.

I dunno if iOS native browser supports desktop view, but Chrome(browser) and many others do. It may be an advert issue, but I use Adguard and even without root access it helps to provide a less congested browsing experience.

I see ads on this site, as I support that revenue stream. A good ad blocking solution will allow easy domain whitelisting. Adguard does.