It is a tough position for many NATO countries.
Turkey itself has big strategic value - location, a top 20 economy, a top ten arms industry, etc.
Turkey is not inherently the problem - Erdogan and his political party are.
NATO hesitates to throw the baby out with the bathwater, hoping to wait out Erdogan, and somehow manage him in the meantime.
The NATO Treaty does not obligate members to support another member committing aggression - only if they are attacked. It would be a high stakes game for Turkey to try to draw NATO into a Turkish conflict - that might precipitate their expulsion, right while they are in conflict.
“Turkey is not inherently the problem - Erdogan and his political party are.”
Erdogan has increasingly made that a distinction without a practical difference. Something drastic and extremely negative must happen to Turkey for that to change.