LED headlights are NOT the problem
Perhaps all the people complaining about LED headlights should either take better care to ensure their windscreen is clean and smudge free, or get their eyesight checked
Speaking from personal experience, someone with good vision and a clean windscreen won't have any issues
After a car wash did a poor job of cleaning my windscreen, leaving a load of streaks, I too struggled with glare from oncoming traffic. A bottle of window cleaner and some elbow grease sorted it
Referring to people as twats/arseholes/etc because they have a newer car that just happens to have LED headlights (which a large percentage of newer cars do as standard) makes you the arsehole (and a jealous sounding one at that)
Edit - poorly adjusted headlights are also an issue, as are automatically levelling headlights. Auto high beams don't work properly either on most cars (I had a rental abroad with this feature which I immediately disabled). But these, again, are not the fault of LED headlights