I have to assume the people who make this comment have never used TB3 devices.
Most TB3 monitors, docks, drive bays, eGPUs etc provide power to the laptop. So while some people maybe don't make use of that capability, it's completely inaccurate to say "there's no port loss". I'd wager that those of us using all four ports already are predominantly using all four for data or video in some way, with one also providing power, rather than one dedicated to power and only three for data/video.
Most TB3 monitors, docks, drive bays, eGPUs etc provide power to the laptop. So while some people maybe don't make use of that capability, it's completely inaccurate to say "there's no port loss". I'd wager that those of us using all four ports already are predominantly using all four for data or video in some way, with one also providing power, rather than one dedicated to power and only three for data/video.