I think only pic,app, congrats and indie are in normal use. Bro is common, but more informal then the above. (you could use those with say your neighbour, but unless you are best buddies you would not use bro)
And telly and barbie are rather common too under a wide public ( not just a subculture of specefic age or lifestyle)
many of these are highly annoying but pic and app are as common as photo and vet to me.
obvious for obvi please
And indeed I think many may not have realised it. I know I didnt use to know it. I had only heard indie games and indie movies and never independent games... Allways saw it as a word on its own, but was really curious why they used that word ( quarter still didnt dropped) Untill I finally knew what it was, cant remember how I found it out though, if I actively looked it up and found out some other way.
Slightly dependent on the sentences, I'd say I am watching tv, but would say the television is broken (i guess in that cause in english you might say tv-set..)
Or perpetuate? But I dont think the types of people that use perpuate often use abbreviations like the ones above.
And maybe the previous generation(s) thought the same, from goodday to hello, to hey to hi.
I am totally fine with pic bro and app, they are rather normall. But totes and obvs etc brrrr I nearly get goosebumps from it. And a little nauseous..
Btw do people really say za??? never heard of it and wouldnt have gotten it if it wasnt for the pic. (tried whatsup, like wazza, and then thought maybe thatsall 'sall => 'za. I guess in my mind I read it as a long za, zaaahhh and with pizza I suppose it is short??? I really cant imagine it being used in a sentence..)