of fundamentalists

we know a fundamentalist believer holds it that their particular god exists.

that their holy book and only theirs is the true word of this god

that their interpretation of the said holy book is the only valid interpretation

and if they believe hell and heaven exist, then everyone else is damned to eternal damnation.

I have read claims on theist blogs that there are fundamentalist atheists.

Am I a fundamentalist atheist for believing the word god is meaningless

for holding that religion* has no redeeming feature

for writing about atheism consistently

for asserting all religious believers are misguided?

How does one become a fundamentalist atheist?

*Religion here means the belief in the supernatural