I understand — you're looking for a "Goldilocks"* device that has the performance, size, and wieght of the Air, but the display and connectivity of the MBP. Well, as you know, that's the key downside of Mac hardware: Design options. Lots of manufacturers produce Windows laptops so, if you don't like what one makes, there's a chance you can find it from one of the others. By contrast, if you want to run macOS, you're limited to what Apple offers.
For you, I suppose it comes down to how much you want your ideal hardware configuration, vs. how much you prefer to operate within MacOS vs. Windows. I use both OS's, and find the user experience in MacOS so overwhelmingly superior that it's not a choice.
*Out of curiosity, to ensure such a creature really exists, can you give an example of a <$1800** 15"/16" PC laptop that equals (or comes very close to) the 15" Air for quietness, battery life, weight (3.3 lbs = 1.51 kg), and performance (say, GB 6 CPU SC score >=2565, GB6 OPEN CL GPU score >=26,000, as shown on the Geekbench website***), while providing 3+ TB4 ports, a high-resoution (220 ppi+) 120 Hz display, and the ability to drive 2 external monitors?
**It should be from an established vendor like Lenovo, Dell, HP, Asus, etc., so we can actually trust the specs, and this should be a "normal" discounted selling price, not some freak one-time-only deal. As you probably know, you can get Chinese-made "256 GB SSD's" on eBay for ~$10 that are of course just scams.
***You can look up the laptop's GB6 CPU SC score here:
And look up its GB6 GPU OPEN CL score here: