stop using "gaslighting" as a general replacement for "manipulation"

it is a very specific form of psychological abuse in which the abuser casts doubt on the victim's memory and perception in order to make the victim question their own sanity

Shaming someone for not voting for Biden is not gaslighting.

Telling someone that something they said is problematic is not gaslighting.

Lying is not necessarily gaslighting.

Saying "trans women are women" is not gaslighting. Transphobes shut the fuck up challenge.

7 warning signs according to Patricia Evans:
Withholding information from victim;
Countering information to fit the abuser's perspective;
Discounting information;

Using verbal abuse, usually in the form of jokes;
Blocking and diverting the victim's attention from outside sources;
Trivializing ("minimising") the victim's worth; and,
Undermining the victim by gradually weakening them and their thought processes.