Footprint to weight ratio is an important factor.
S25 Edge weights 163g but it felt noticeably lighter in hand than other phones with similar weight.
It's just odd to me that despite its price it feels closer to a superthin upscaled e, rather than a superthin upscaled 17 or instead being extralight. Now I imagine they didn't have a lot of weight to lose given how optimized for weight phone components were already. The Air branding just had me hoping they had a bigger engineering statement to make than what they did.