The workers receiving those $1000 bonus checks, are not going to see a hit from the state & local deduction changes. Unless you think those people are making $250,000 per year and living in homes that cost $1,500,000 (they're not; and if they were, not only would the $1k not matter, they can easily afford the very slightly higher taxes).
Those workers are also covered under corporate health insurance. The only valid argument about rising healthcare costs in that regard, is that it detracts from their potential salaries over time (debatable whether that benefit would be redirected to salaries or to AT&T's net income figure, were healthcare costs lower).
When I worked there (long time ago), that wasn’t the case, but seems you are correct now anyway.
http://att.jobs/media/151345/Benefits-Overview-Management_01...
In Utah there are quite a few clinics like Medallus that are offering very low cost pay as you go services. You can save easily over 10k a year with that. They have memberships too for like 100 a month that are more like insurance. When I look at my medical premium every month around 1500, plus deductibles and copays it's freaking ridiculous.
[1] https://www.cnbc.com/2017/10/12/obamacare-bombshell-trump-ki...
And ultimately I think insurance will go back down to sane levels when it becomes more like insurance is supposed to be (this is assuming that is permitted by government to happen, which is unlikely. I actually think we're gonna get single-payer within the next few years. Even Trump has supported that in the not-too-distant past (see [1] and secondarily [2])). Right now we call it insurance but it's basically a health plan. IMHO we need to stop screwing with it and let the market do its thing.
That said obviously we have the elephant in the room regarding people who can't afford care. It's inhumane to ignore those people. We need a solution there. I have ideas but this is a poor forum for articulating those.
[1] https://www.forbes.com/sites/theapothecary/2015/09/28/donald...
[2] https://www.washingtonpost.com/news/the-fix/wp/2017/05/05/tr...