I do share your skepticism overall, 5G is being pushed more aggressively than its value would warrant. But there are parts of 5G suite that are indeed valuable and go beyond the mere "moar speed" mantra.

Network slicing is not consumer facing, but is a big deal in business-to-business connectivity, likely enabling business models that just aren't possible today. It's a bit like renting virtual machines in the cloud, but instead you're renting connectivity, tailored to your SLA needs.

Higher bandwidth, lower latency and lower power consumption are not exciting in isolation, but improving all of them at the same time does bring notably better user experience (see the raving reviews of M1 Mac for the same phenomenon).