What would happen if every time I flag an email as spam in my gmail, it would automatically send a bounce to the sender? Gmail would get blocked as a spammer,

What would happen if every time I flag an email as spam in my gmail, it would automatically send a bounce to the sender? Gmail would get blocked as a spammer, because... sometimes the sender is spoofed ...so they would be sending spam to the spoofed sender, who doesn't want to read the spam either.