I have a free account at MyHeritage which I very seldom do anything with. If I do log on, which is rare, and look for something, then I get “Smart Matches” which are not infrequently from my work at WikiTree, or FamilySearch.
I suppose this is just a way of trying to get me to subscribe. But why would I subscribe to a site that searches free sites?
So, I look at their matches which has most information hidden and then delete it.