Very thoughtful and nice comment @espoem. Thanks.
Very good questions here. What I know is that @themarkymarks list is available to everyone. Many bid bot owners dont care. Most of the good ones use themarkymarks list. Most of them share information about abusers.
I use many different image tools and the abusers are getting trickier all the time. For me google image works the best.

I have nobox but it seems like it doesn't function properly with my VPN and Linux computer even inside the Chrome browser.

Do you think that bid bots would be more acceptable in general if people paid, let's say, at most 3 different accounts (services)?

When it comes to bid bot abuse I rarely flag for this reason. I have but not much. One time I will flag any size bid bot vote is when it is on a comment. I don't think comment should be able to buy bid bot votes.

When someone buys multiple bid bot and its not for the intended purpose(adverstisement) its wrong. Most bid bot owners claim their services are for advertisement. That is one of the worst kinds of bid bot abuse. Most bid bot buyers are just trying to get more steem and sbd not trying to advertise.

Many of the abuse fighters are opposed to bought votes that artificially raise the rep of scammers and people who share.