Nah. Only things that might slow them down are those pesky workarounds for silicon security holes. Otherwise it's either blocked up fans/vents (MBA M1/M2 won't have that problem!) or a change in workload requirements aka bigger websites, more advanced software, etc.Don't worry. Future OSes and other software updates will eat up all that bandwidth. They always manage somehow to make a blazing fast computer feel like "it's getting slow" a few MacOS versions down the road.