I've come to notice EVERY announcer will get a ton of hate and those who hate will be very vocal about it. It's not happening to Romo because Romo praised Josh Allen too much.
I'm one of the rare few who thinks these broadcasters for the NFL have a lot of great announcers and color commentary guys. Kevin Burkhardt is fantastic, Al Michaels is classic (I still think he works better with Collinsworth), and I'll say it, I think Joe Buck is one of the best.
They aren't as passionate as your local announcers, because well, they aren't supposed to be as biased. I think Romo is doing quite well and plays off Nantz perfectly - even Nantz says he brings out the best in him and you can see Nantz getting a little more colorful than he did with Simms in the booth.