Among the many changes, the new rules would require batteries in consumer devices like smartphones to be easily removable and replaceable. That’s far from the case today…
You can have a swappable battery and water resistance. Samsung galaxy s5 had a removable plastic cover and IP67 water resistance, so if the manufacturers tried they could easily have them both.
Also, if you do any repairs on a new phone you lose water resistance (unless you replace the silicone), while on the s5 you could just replace the battery and would just need to press the cover back on. After the repair the phone would still be water resistant, unlike the new phones with glass backs.
The only weakness with the S5 was the charging port having a cover that could easily break off, but modern ports these days are waterproofed, so they could just make one of those.
Personally, if they remade the S5, with a modern board and charging port (rather than the Micro-USB 3.0 monstrosity), I’d be very tempted to buy it. The IR blaster and everything else was just nice to have.