Erm, I'm not exactly sure how it is that there's a fresh thread about Iqos being supposedly something 'new' in 2021 - excuse my ignorance, it probably has to do with some regulations in the US I guess? I tried it back in Ukraine in uhm, not exactly sure, probably early 2017 or so - by then it was widely available pretty much anywhere in Ukraine.
By that time I'd been vaping for a few years already, having already got used to sub-ohm DL vaping and all that it entails - big clouds, a variety of rich non-tobacco flavors and so on, so when I tried an Iqos, my impression was... well, quite meh to say the least. No clouds, almost zero taste, expensive, what seemed to be like zero throat hit to me, some sorts of charging troubles - I wasn't impressed at all.
That being said, perhaps the newer generations are better; also, obviously everyone's experience is different - I for one, after smoking for 20 years, just put the pack of Camels away one day and picked up the vape - and never looked back; in 7 years had 1 pack of analogs for 1 day when I drowned my vape when being super drunk and high at a friend's wedding. Hated every puff I made too.
However, anything that's less harm than smoking and that eliminates the burning is definitely good, if Iqos gets more people to switch from burning to at least heating, that's undeniably good. The big tobacco companies profiting from their 'answer to vaping' is a whole different story though.