I switched to a paid domain in the last few months and regret not doing it sooner - it just works, and it’s nice knowing that I won’t have to reconfigure all my stuff to point at a different domain name again in the future. Price was maybe $15/year on porkbun - very much worth it imo.
I’ve also used freedns in the past and had no complaints about them, except that I think wildcard subdomains are limited to paid supporters (very cheap though) and at the time my SWAG docker image maybe didn’t support them? It’s been a while. The service was great though. Never had problems like I did with duckdns.
Care to elaborate? Everything I’ve ever heard about him makes it sound like he’s a massive piece of shit. You buy his lies about Sandy Hook? Or think it’s fine to make up whatever you want no matter who it hurts, and expect no consequences?