Literally the only justification to buy an Apple router was, and remains, that you absolutely must have one with an Apple logo on it. The Time Capsules in particular dissipated heat extremely poorly, their performance overall was
middling at best, the management interface was pretty but terrible, and at a time that the industry was rapidly churning technology, Apple (just as rapidly) fell behind with a slow update schedule and no communication about or timeline for supporting newer standards or urgency about security updates.
Apple has made a lot of decent peripherals that justified their higher price (various Apple monitors are a good example—Apple's early embrace of LCD was a boon. Even the Studio Display remains a decent option) Airports, other than perhaps the very earliest UFO-shaped ones that provided decent, accessible performance at a time when wifi hardware was still complex and expensive, were poorly designed and a poor value.