That’s the part I was refering to. There has been discussion about if USB-PD precludes Qualcom’s QC tech. Generally the answer has been ‘yes’ as it requires messaging that is a violation of the USB-PD spec. It’s not exploting any ambiguity or anything, it’s completely in violation. So, if they do try anything, it’s possible they could get fined by the various EU countries.
The same goes for crappy cables and dodgy chargers. Also for broken devices like the Rasperry Pi4B which wouldn’t work with high current cables because they cheaped out and used one termination/sense resistor instead of two. I think the possiblity of getting sued or fined for poor USB-PD implementation will help clean up a lot of ‘iffy’ practices that have been going on.
I don’t get Apple’s complaint in this. They already use USB-C w/PD for their laptops, the Pro iPad line (for like the last 3 generations), iPad Air, and the mini just went USB-C. IIRC the only devices not on USB-C are their phones and the base model iPad. I’m guessing they don’t want to change the base iPad because of schools having huge collections of lightning charging setups, but the phones? They don’t even include a charger in the box any more, so they? So, it’s up to the user to buy something. I guess they assume they’ll reuse an older charger because of course they’ve been locked into the ecosystem already.
Qualcom and others who have been coming up with more and more crazy ways to fast charge over USB-C have had plenty of time to move to USB-PD. If there are any costs to them in having to do so to comply with these laws, then that’s just too damn bad. You have been in volation of the spec for years and that has hurt consumers. I’m glad the EU is doing this because I hope it cleans up all this crazy phone charger nonsense. I’ve had to buy silly chargers for the QC and Warp phones I’ve owned. I would be much happier with one charger to rule them all. It doesn’t bother me that it’s USB-PC, either. As you point out, the spec is pretty complex, but it’s also very flexable in what you are required to implement. For phone level chargers, the difference between a QC charger and a PD charger is just a matter of the code in the controller chip. For higher levels it gets more complex, but for 240W I want more safety in my charger! 
I recently purchased a new Chromebook and it came with a USB-C/PD charger (45W). I really like that I can unplug my laptop and plug in my phone (OnePlus 8) and charge it with the same setup. That’s super handy. My phone can’t do its propriatary Warp charging, but I really don’t want that level of battery abuse. The 15W it gets through PD (5V/3A) is plenty for the little battery in the phone. Maybe it’s my lifestyle, but I don’t see much use for a super fast charger. My phone lasts all day (rarely even goes down to 50%) and it has all night to charge. I use a cheap 5V/1A charger for it so that the battery doesn’t get stressed by charging. After all, it’s got 8 hours, take your time little phone.