But the age restriction is due to EU regulation. It's only a matter of time until it filters elsewhere. Switching from YouTube isn't going to make a difference.
Actually I'd be very, very surprised if this was even in the jurisdiction of the EU.
So I gather you don't have any source either then.
Google even says so: https://support.google.com/youtube/answer/10070779?hl=en
>The Audiovisual Media Services Directive (AVMSD) is an EU-wide coordination of national legislation on audiovisual media – both traditional TV broadcasts and on-demand services. Recently, AVMSD was revised to extend certain rules to video sharing platforms (VSPs).
>In line with AVMSD, you may be asked to re-verify your date of birth when watching age-restricted videos. Follow the prompts to submit an image of a valid ID or credit card.