I think not having a 2.5 gigabit port at least is a poor choice.
Press X to doubt, isn’t a large part of country under Comcast (aka crappy monopolistic cable)?
Obviously the subset of users with multi-gig fiber is relatively small, but not practically zero like the comment suggested. Anecdotally, 3 Gbps fiber is widely available in my medium sized US city of about ~500k for as low as $110. I paid the same for asymmetrical gigabit cable internet in the last city I lived. It just depends.
Are you talking "4k streaming" as the current streaming providers do it, with trash bitrate, or "4k streaming" as you would do it if you had ripped your own blu-ray disks and you want to stream it from a NAS somewhere else in your house to your living room?
https://www.tomsguide.com/tvs/forget-streaming-services-here...