This thread and consequently the discussion would be easier if you posted a couple of youtube/soundcloud/beatport etc. examples of what you consider prog trance,
and what it by figure of speech "has turned into" anno now (with a few examples) . I find it hard to pin what you mean.
I guess in my mind it was a bit of umbrella term always.
For example old Markus Shultz:
On the other hand Marco V I always considered tech trance, but another guy that made some techy sounds also made some progressive trance? and/or house or both - Marcel Woods.
I guess I am on the wrong when I consider Super8 & Tab and Cosmic Gate on the progressive side with a bit of tech influence as they are more into what some people refer as trouse or commercial.
As some people dislike the Anjunabeats example here is another - Kyau & Albert made a switch to progressive a long time ago so did their label Euphonic, but even with them I see a definite switch lately to slower deeper sounds that are closer to todays progressive house.
In a way I think todays prog trance is getting merged with todays prog house. Something that was happening for ever I guess because the two styles are so close and according to many people prog house emerged/evolved from dream dance/trance. But they always had difference and bpm being one the most noticeable ones. Although from what I see progressive house 2000-2010 and even + or at least what I find classified to that also had a lot of 128 bpm songs that started getting slower in time. My guess is now trance is following the trend.
As a said I might be wrong specially since I use prog trance as umbrella term, but everyone notices that we are getting into deeper chiller versions of both prog trance and house for years and with clubs closed there is no demand for faster songs. Keep in mind I am not a native english speaker and sometimes its hard expressing exactly what I mean.
If I dive deeper I guess prog house also has some subgenres
1. darker, slower, deep sounds - think Stan Kolev
2. commercial like Avici
3. closer to prog trance maybe even one and the same with prog trance
And the way I see it 1 and 3 are getting merged into one style with number 3 being a lot of the prog trance. So I am not saying it will disappear but it will fade away to obscurity.