Disagree with you 100% on the explanations and education during the broadcast. NASCAR does very similar things. IMO, they are necessary. Yes, a seasoned veteran finds it boring and dull. However, they will keep watching because they know what's going on and how things work because they are interested in the racing and the outcomes.
Switch gears, if you are new to NHRA Drag Racing and watching broadcasts for the first time, are you going to stick around and watch if you just feel overwhelmed, confused, and do not understand why a FC does this, why TF does that, how the countdown works, etc. Most likely you will tune out and leave.
I don't understand how many complain because the sports fan base isn't growing and NHRA needs to do more. But as soon as NHRA / FOX do things to cater to the "new" crowd, the same complaining group kicks up again and makes it about themselves with statements like "quit treating us like first time viewers". That is such a miopic viewpoint. Most seem to want something to positively change, but you want NHRA to solely own it without it being at the "experts" expense (knowledge and experience) or inconvenience. Very narrow minded if you ask me.