Why can't google/blogspot ever work well on mobile!? Google hides sites that are not mobile friendly but they don't fix this? I bet it's their user-agent detect

Why can't google/blogspot ever work well on mobile!? Google hides sites that are not mobile friendly but they don't fix this? I bet it's their user-agent detection where they serve you different content based on the mobile browser you use (i.e.: if you don't use a popular browser, even if it uses webkit like chrome you get crappy content)