Actually, it isn't BS, because it's a baseline expectation. Those situational bonuses are supposed to be layered on-top of a fully-functioning baseline.
Except that baseline isn't a set number. That's where the feat tax OCDs have lost their minds. Different roled baddies have different numbers. Claiming it's some sort of God-given right to hit everything at a certain clip is, well, really overboard. There's a very big difference between 'you should hit around 55% of the time' to 'you will hit 55% of the time or more'. The 55% is a general sense, not an absolute sense. The only way to actually guarantee that hit rate is to
1. modify all monster defenses down,
2. make them all even,
3. remove random elements,
4. remove all negative status effects,
5. guarantee everyone is using monsters of that level ...
6. ...against characters only of same said level,
7. remove all proficiency bonuses,
8. and ability modifiers,
9. etc.
Even in as basic of a system as 1e there was weapon specialization and, with Unearthed Arcana, double secret probation specialization. Was that a proficiency tax for fighter classes?
I hate missing as much as anyone, and maybe more than most, but this sense of entitlement because someone glommed on to something said at a seminar is really ridiculous.
Another question: If we weren't meant to miss, why do so many powers have miss effects?