I know several owners who have never spoke to the SBE. I couldn't tell you where a chapter is in our state. I think the membership has dwindled and chapters have folded due to engineers retiring.
I had a spirited discusssion with some great engineers that demand full time, 100k a year, benefits, etc. I've always hired contract engineers and now this is going to be the industry norm in all markets with budget cuts and revenue declining for the most part or full time engineers that are willing to travel such as the new iheart plan. Like some DJ's (talent) they are not going to accept this and blame the industry for the cuts or retire.
The reality is if you have basic engineering skills (no the high power RF suff) most repairs can be done in house. A lot of this stuff is diposable, plug and play, or IT related. I had a network problem that was impacting some computers and I solved it in 30 minutes. Yes there is a You Tube Video for that

and I replaced our playout system on one of our FMs this week in a few hours.
Antennas and high power equipment will still require the service of a engineer. For the most part new transmitters are reliable and require very little maintenance.