Every year after doing my taxes, I look at the calculated effective tax rate from TurboTax. But yeah, the vast majority of Americans just think “I got a refund!!!!” without realizing that a refund just means they paid too much during the year. It has nothing at all to do with their actual taxes...
It should, but it depends on what you personally are trying to measure. If you want Total federal effective tax rate, then yes. If you want you overall effective tax rate I would also say yes but also add your state and local taxes as well.
Next time you want to make a fool of yourself, might I suggest you do do less publicly? My taxes went up, for two reasons. I got slammed by the 10k limit and, contrary to your assertion, a good portion of my income is now taxed at 35% rather than 33%. One of the brackets increased rather than decreased. 10 to 15 percent of us saw our taxes climb.
Overall the impact was negative, but not significant. SALT hit me hard. Had purchased a vehicle in 2018 and was looking forward to deducting almost $20k total (including RE, general sales tax, vehicle sales tax). Elimination of personal exemptions was not good either. But the child credit was not bad.