May companies like Realme still use Vooc charging and have not switched to USB PD. I think it’s the case with majority of Chinese OEMs.

A similar case is seen in wireless tech where Qi or Qi2(which currently only HMD supports) isn’t the base standard for Chinese OEMs since their propreitary solutions can sometimes wirelessly charge as high as 50W in some cases.

Very few flagship phones offer the first two now. ( I think Xperia series had an Headphone jack). Replaceable battery is almost gone even in mid rangers. Chargers, Chinese OEMs still provide but still not Samsung or Google.

Err, this payment doesn’t block ads. It only switches off personalised ads. So, the user is still seeing ads, just not targeted ones. So the site is getting both user’s money plus ad money. And technically, I am not sure how privacy preserving this is because you will still need to create an account which technically leaves you vulnerable to tracking.