There is a user that is modifying a lot of question in the last couple of hours, in particular, converting to latex any plain text that he considers that should be in math mode. It is getting annoying because some of his changes are objectively wrong. For example, see the last changes made to this question:
How are the two natural ways to define ''the category of models of a first-order theory $T$'' related?
What can be done? I think that the op has the right to choose her/his style of writing.