Again, depends on your source content. Obviously 4k/HDR is H265. Plenty of shows are still 1080p source though even today. Not the 'flagship' shiny ones, but there's a lot more 1080p max source content. And for those, the proper format is H264, and still is what is released today.
Sure, if you are going to go get an older show that's pre 4K/HDR or a movie that isn't on UHD disc yet, then it will be H.264 of course.
But if you primarily watch newly made 4K/HDR content, it's all been HEVC for years now.