Well, carrying either 2 or 2 and a half people on your shoulders of course. Although, things do get a bit messy with all the blood loss from the half body, but there are some modest sacrifices we have to accept in the pursuit of excellence.
If you read my post again, you will note it says, "in fact if you put a lot of effort into some BW exercises" - note the absence of the word ALL. Also if you read my other posts you will see that I have spoken about poor training habits of iron slingers who substitute 50kg lat pull downs instead of doing wide grip pull ups (even assisted if they need to) - whereas to get the best development the pull ups are better. There are of course many other examples I could mention as I would hope you are aware.
If you are in to all out strength training and hoping that you can add enough mass to your thighs to make them touch from midway and all up to the top, then yes, heavy squatting is the way to go. This however, is not the primary objective of most people. If you want to increase load whilst BW training, you manipulate repetitions, partial range, body position, static holds, isokinetic movement, plyometric movement etc., to all influence the duration and difficulty of the exercise. If you want to feel the pump - then BW will achieve this equally as slinging iron will, however, BW requires more thought about body position (form), intensity of workout and desired affect. Also, when finishing a BW exercise you don't have to try to throw anything through the floor once you are finished, because you cant handle the weight that was too heavy for you in the first place.
And in case you are wondering, yes, I train with free weights and have done so for the last 21 years (BP-125kg, Sq-140, DL-160kg), I use BW when its sensible to do so (see earlier comment) and I like the bike for cardio. So I know what I'm talking about.
Fortune Favours the Brave
I can only talk from my acquired knowledge and experiences. You may have a different view or experience and I will respect that. Please respect mine.