AFAIK, the only reason not to use Letsencrypt are when you are not able to automate the process to change the certificate.
As the paid certificates are valid for 12 month, you have to change them less often than a letsencrypt certificate.
At work, we pay something like 30-50€ for a certificate for a year. As changing certificates costs, it is more economical to buy a certificate.
But generally, it is best to use letsencrypt when you can automate the process (e.g. with nginx).
As for the question of trust: The process of issuing certificates is done in a way that the certificate authority never has access to your private key. You don't trust the CA with anything (except your payment data maybe).
A simple cron job with youtube-dl works also fine.
Edit: But thanks for your suggestion! I'll take a look
Edit 2: TubeArchivist looks nice, but way over my personal needs. Also, its performance requirements are quite high for my small server (4 Cores, 4 GB RAM). I'll keep my small, scripted solution (yt-dl + store to nextcloud folders).
Foldable phones - at least the early generations hat lots of troubles with the hinges and scratched screens.
Still as of today, testers are undecided if these category of devices really has a benefit compared to just buying both a tablet and a phone (and still saving money).
I'm on lemmy a lot, but have not seen your site yet. But I'm hesitant to register for a site to find out where to register.
Also, you seem to have a list of servers, where I was able to suggest one country. feddit.org serves the german-speaking fediverse, and that is at least four countries (if you count Liechtenstein).
Nothing of value was lost when EV certificates disappeared.