It's a hit and miss situation imo.
I know a lot of people who have their pronouns in their bio and are nice people. It's usually more of a warning sign. I've found others who had none and yet they were awful.
When they have their political identity in their bio,no matter which one,you got to avoid them.

And be sure to ESPECIALLY stay away from anyone who uses a Hammer & Sickle or a Swastika in their username and/or bio.