No. Just because some extremist weirdo did some weird extremist stuff doesn’t make all SJWs ‘bad’. No. No.
Most who use the term “SJW” use it to refer to said “extremist weirdos” specifically. The closest definition that captures what is meant is on Urban Dictionary here as the top definition.
"But I hate all men because they might be rapists!"
"Elliot Rodgers! Rape culture! Yes all women! M&Ms!"
A chain is no stronger than its weakest link. All social movements appear to be bound to this line, and social justice is no different.
Exactly why people hate feminists, because of the extremists that hate on men. It’s why we can’t have nice things.