Sefaria contains translations of the Gemora and other seforim by non -Orthodox “scholars”. A user won’t necessarily know if he (or she) is learning Torah or taking in something from a tainted source. I myself have found Seforim translated in a skewed way. (Lines of Gemora – not the deplorable source sheets that are open to everything deplorable that can be misconstrued about the Torah ).
This is a big issue. Torah must be learned with Tahara and Kedusha.
It’s sad that so many don’t aeeem to be bothered by the idea of using a resource for Torah learning that is tainted.