I am a speech therapist, one of the very professionals who spends an awful lot of time talking about the supposed detrimental effects of a bit of television, but I really do think that at a young age, it's just lights on a screen.
Once, people spoke about how print would destroy the human mind. It didn't. It changed aspects of how it was used, probably (as is true with most things) for better and for worse.
I didn't let my ds1 watch any television before the age of 1 and then only sparsely. I didn't even feel particularly strongly about it, I just couldn't stand the noise because I was significantly depressed. Yet I found the silence hard too.
My ds2 (1) has seen a bit of teletubbies some days. He also sees some television when ds1 (now 3 and a half) watches it. There are many weeks we don't watch it at all. There are also many weeks where we watch a fair amount. Certainly when I was pregnant and throwing up, it was on a good bit. Lo and behold, my children can both speak, play independently, attend, interact - even the one year old who has moderate hearing loss in both ears has a few words, bang on target for his chronological age.
AIBU makes me laugh with the faux confusion about why anyone would ever put the television on. OP, you should check out the Sanctimommies facebook page. I can see some contenders on this thread already.