Perhaps we should examine the point and see how strong it is.
1e dragons did end up being fairly weak, although there was a fair amount of variability and some could bloody pretty powerful adventure groups. 2e greatly expanded the range of their power, giving them a much higher peak. 3e translated that into 3e's terms, making them some pretty dense sinks of hit points (although also making them very vulnerable to a touch AC-based attack) and fitting them in the CR structure (usually at the high end of each rating). A great many of the powers were consistent between 2e and 3e so I'm not seeing much radical change here.
So how did this play out? I'd have to say largely positively. But it's important to see what's going on. The name of the game is Dungeons and Dragons, so the role of dragons in the core game has always been pretty iconic. I daresay most people investigating 2e from their 1e experiences saw the ramping up of dragons as an appropriate response to dragons being too weak for higher level adventurers. The prestige monster wasn't living up to its threat and that needed to be corrected.
Moreover, the weaker dragons of 1e could still be largely covered in the rules by just making the dragon encountered be fairly young. In other words, what it meant for a creature to be a dragon was expanded - but not invalidated by the new structures. The same is true for 3e. There are plenty of dragon encounters suitable for low level characters just as there were in 1e. The most 'radical' changes wrought by 2e and 3e were that dragons were now viable creatures to encounter at any level.
So how strong is the point? People were receptive to changes here because of the nature of the changes. They were largely additive rather than transformative. This isn't anything like the appropriate of the term eladrin to make blink elves. This isn't turning good giants bad. This isn't some grand unification of infernal creatures.
But, you've talked, at great length, about how easy it is to translate 1e modules into 3e.
So, let's take DL 1 Dragons of Despair, the first Dragonlance module. Now, you'd think Dragonlance, being an iconic use of dragons should be pretty easy to translate.
At the end of DL 1, the party will encounter
Khisanth according to the module (DL1 P 28), an "Ancient Huge Black Dragon". This is the biggest and baddest of black dragons in AD&D. They don't get any bigger than this.
By 2e, to make the same size dragon, Khisanth becomes a Very Young Black dragon. I'd say that's a pretty major change.
By 3e, Khisanth gets to be a young black dragon. By 4e, the same.
In 1e, there's a pretty good chance the dragon can't cast any spells. In 2e, black dragons top out at 12th level MU, in 3e, it's 15th level Sorc. 4e dragons don't get wizard spells.
So, what's my chance of subduing a dragon in 3e? What's his chance of being caught sleeping? Oh, right, that was changed.
I think you are saying that changes you like are additive and changes you don't like are transformative, because, as far as I'm concerned, a 1e dragon looks pretty much nothing like a 2e, 3e or 4e dragon.