One is VC funded darling from US. Other is more than 20 yo german infrastructure company that doesnt do marketing and starts to slowly eat from the AWS pie because they are cheap.

Hetzner does marketing. A German tech youtuber I follow does in-video spots for them.

Yes, a few years back there was another german youtuber who also had some promo ad for hetzner. Though the amount of ads is pretty limited compared to others like Linode.