Another straw man argument is to define "atheism" as denial of god's existence. Most atheists won't subscribe to that statement.
Really? Tell me more...
I know the Four Horsemen tried to call themselves as "bright".
But the A on atheism means no and no means denial.
Maybe you are referring to those who lack belief in God.
Well I know there are people like these but they're not activists. These people are more nihilist in the true sense. They would never bother to debate in an Internet forum. Or these people wanted to believe but can't even though they keep trying. Usually these people don't identify themselves as atheists.
If someone is an activist it must be an apologist or a denier.
If someone lacks something I don't think it would try very hard to boast its position.
There's a very clear difference in attitude between denial and lack/absence.
If someone lacks a vagina in its body would be very strange if this one identified as an avaginist.
Only denial moves a person to identify itself with a Greek "A".