It looks like these scammers' attempt to advertise from this forum was a complete fail, which is something good,
Their attempt wasn't advertising, but combination of SEO spam and general shilling. That's why moderator eventually ban their accounts after i continuously report their post for about a year.
but they have now decided to carry out paid ads on other mining-related websites. I am really so disappointed with WhatToMine (whattomine.co) for enabling the scam, as it one of the websites used most of the miners to calculate mining profit estimations

What a shame. But not very surprising because their website looks convincing at first glance and people usually don't bother do detailed research. On earlier page of this thread, other popular crypto website such as coingecko even used to publish their sponsored content.