Well, all personal experiences are personal! I don't think it was the most loved class, but it was far from the least favorite. Other than me, I can't recall anyone else who enjoyed playing the Illusionist, for example. And the Monk ... eh, let's just say it wasn't a popular class in 1e (IME). And Druids? They were clerics, except worse, and without healing.
After playing a lot of magic-users, Druid became my favorite class in 1e.

Really pretty awesome in a lot of ways, and less of a healing burden.
Cleric was easily the least popular class, excepting the barely-there Monk & barely-accessible Bard. It was, however, no less played than the other standbys, because you /needed/ one. Or else.
And, while that was my personal experience, and the personal experience of everyone I ever met - again, except the one guy who loved playing evil clerics - it was also the dominant paradigm in the pages of Dragon in that period. Nor did I see it change in the early on-line community, even as Spheres and custom priesthoods made the class more interesting - and in the case of some L&L specialty priests, apparently, broken.
Denial of healing burden and the unpopularity of the Cleric seems to be a pretty new thing. Even in the 3e era, it was broadly acknowledged that the game had over-compensated for it by giving us CoDzilla.
I may have missed the pseudo-Christian religious baggage, however.
It was hard to miss: you've got a guy holding a cross in some 1e illos, the spell list leaned heavily towards biblical miracles, turn undead was an obvious reference to holding vampires at bay with a cross, and the blunt-weapon restriction was derived from a certain interpretation of scripture.
Level titles, OTOH, were taken from a broad range of religions. You went from cultist to Anglican to Catholic to Tibetan Buddhist amongst other things as you leveled. ;P
I agree with what you write here. The Cleric is definitely more intriguing as a class option in 5e.
More potentially interesting than it was in 1e, certainly. And not as bad as 3e's CoDzilla.
The 5E cleric unfortunately carries the exact same kinds of religious baggage unless the DM goes out of his way to get rid of it, e.g. by declaring clerics of Death to venerate, not an actual god of Death, but simply Death in the abstract.
That's not that bad, at least you can squeeze in a variety of death and other more pagan/fantasy-feel religions via Domains.
Religious baggage in 5E is worse than it was in 2nd edition.
But better than 1e.