Ewwwww I hate hydroboost brakes. Mostly just because if you try and steer with your foot hard on the brakes the power steering starts to cut out a little (if they’re on the same system, which usually they are)

I believe you, but how much heavier is a brake booster really? They’re pretty much just a big hollow air chamber with a diaphragm inside. I’ve never actually compared a vacuum assist booster master cylinder to a manual master cylinder before side by side but I can’t imagine the booster weighing more than like 5lbs. (Which yes on a very light car matters but for most cars it’s not something anyone is gonna notice)

Edit to caveat:

Hydraulic brake boosters (yes they exist) I’m sure weigh a lot more because of all the fluid inside.