Googles: YT4LR2020 Youtube comments?

I've been interested in what these "Googles: YT4LR2020" comments (examples can be seen in the attached picture) are all about. I've been seeing them more and more recently and I'm completely unclear what the intuition behind them is. Of course these are all bots, but what do those behind them want to achieve? I tried it out myself and came across ytkarten.com very quickly. This offers supposedly free vouchers for e.g. PSN or Amazon. It is of course clear to me that this is fake and I hope that no one really falls for it. Nevertheless, I'm interested in whether this can cause malware, e.g. Should get trojans? Or is it more in the direction of data phishing? Or are you just lured into a subscription trap?

I'm also interested in whether the owners of the accounts from which the comments are posted know about it, or whether they are paid for it, or whether they have been "hacked" and no longer have access to the account? They are mostly real accounts with around 20 to a few hundred subscriptions and "real" content that have existed for a long time.

And how can one proceed against such comments, besides reporting them constantly?

It's about phishing. When I see the profile pictures, I assume it is aimed strongly at kiddies who fall for it a lot.

I did it, there came a website where you can choose vouchers worth 50-500 euro for free, no matter where (amazon, playstation, apple, google play, etc.) and I clicked on it.

I should enter my number to receive a text message and to confirm it, but then a subscription starts immediately which deducts 7-15 euro per week from your cell phone contract / prepaid and of course you don't get a voucher so rip everything off to withdraw money from you…

You should confirm "that you are human" and enter your phone number where you will receive an SMS with a code that you have to enter on the page. If you do that, however, you take out a subscription which costs 5 euro a week. You are told that you can end it with a text message back with the word "end", but that is a cheap lie.

The bot channels are usually hacked accounts that have been phished. You can create it yourself, but google shoots you in the leg faster.

In addition to the comments, you can also report the whole channel and the spam videos that appear when you google the text. However, Google is very slow with processing the reports.