If you're on Android using an app like Materialistic to browser HN, like I am, use a reader-mode-only app like Reedy to open your articles; since it only parses html and doesn't run scripts, it will work on every site that sends the whole article and not just a snippet.
I'm partial to Reedy because it tends to fall "safe" and include more content rather than less, but other similar apps should work just as well (SmartNews has a similar function, as do Article Reader Offline, wallabag, and Webreader; I find Reedy has the best UI/feature set for my use).
TBH, I never use a "smartphone" for web browsing. Screen is too small, no tactile keyboard, etc. Also, I generally do not install mobile apps. Only a few from F-Droid on Android, one or two on iOS.
I'm partial to Reedy because it tends to fall "safe" and include more content rather than less, but other similar apps should work just as well (SmartNews has a similar function, as do Article Reader Offline, wallabag, and Webreader; I find Reedy has the best UI/feature set for my use).