I'm 110% positive that your experience isn't representative of most modern D&D games.
I think it is and I have played with dozens of groups from many countries.
I think high fantasy and high magic is the norm for D&D. Official WOTC adventures represent about 50% of games I would say they are mostly high fantasy and high magic as are most 3rd party adventures.
Low magic games are relatively rare and completely non-magical PCs have become virtually unheard of.
If you expect magic won't be able to be easily defended then your game will make rulings and focus on those aspects of the game where magic is harder to defend. Not to mention any potential house rules or rules interpretations that tend toward making magic stronger.
I don't use homebrewed spells or many house rules, so the description decides how easy it is to be defeated. It was WOTC that made Truestrike, Agonizing Blast, Command, Tashas Hideous Laughter, Wrathful Smite, Chromatic Orb, Conjure Minor Elementals, Spirit Guardians, Witchbolt etc a lot more effective. Presumably most of the gaming community likes these changes. Certainly more players take the spells than used to take them (except CME, I have not had a lot of players take that one for some reason).
The changes I do use, to mage slayer and Indomitable, have a near zero effect on how easily magic is defeated in general. I am changing one feat and one class ability that players who play that class do not get until 9th level. It has a significant effect on people who would take that feat (although most don't and one in my game wanted the old feat) and a large effect on high level fighters. Fighters represent about 25% of characters, when you consider multiclasses and the number of sessions below level 9, indomitable is probably something that is in play on a character sheet for about 10% of gaming sessions. It has no effect at all on players who wouldn't take the feat, don't play fighters or multiclass before level 9, and that is most players.
Also let's be clear Indomitable is about saves, not about magic. It works just as well to avoid being swallowed by a Terrasque as it does against Befuddlement.
So yeah it is not like magic is a whole lot more powerful at my table than at others.