Hi all. I have an 18 month old DD and admit that, sometimes, she watches TV. Mainly Mr Tumble and other CBeebies programmes. It's not on all day every day, it's on for maybe 20 minutes at a time and she'll only sit and watch it for maybe five minutes at a time before she goes off and plays with her toys or something else catches her attention. I hate silence though so if the TV is off the radio will be on.
To be honest, with my partner at work most of the time, the only chance I get to actually do anything like cleaning or cooking with DD around is when she's distracted by the TV for five minutes! I still play with her, talk to her constantly, read to her everyday ect. Even when she's watching TV I'll 'narrate' what's going on and ask DD questions (what's Po doing? What colour is that? Ect).
I only ask this because I was discussing children and TV with a mate recently, and she seemed horrified when I said DD sometimes watches TV! She claims that her son, who is now 4, didn't watch any TV at all until he was 2.5! And that the AAP doesn't recommend screen time at all until 2 ect.
Now, since the COVID pandemic the AAP have relaxed their stance on screen time, but it is true that they normally don't recommend any screen time until a child is two. However, after reading into it a bit, it's not so much the TV itself that's the problem, it's more that if the TV replaces human interaction such as talking, playing, reading ect that it can negatively impact development. Which makes sense. I'm sure anyone would agree that a kid being plonked in front of a TV for hours without being spoken to or played with is a bad thing! But 10 minutes here and there? Is that really so bad? 
DD is perfectly happy and healthy. She knows loads of Makaton signs thanks to Mr Tumble and can count to four thanks to nursery rhymes on YouTube. I don't think a little TV has harmed her!