We had different lessons. I got TE with same technique I had for 30+ years with syn gut, then multi, which seemed to serve me well without getting TE. Five years of RPM Blast @52lbs and TE … but hey … my elbow fought the good fight. I remember getting wrist soreness (never happened before) first session with RPM … should have not ignored it.
I have seen hundreds of rec players over the years with lousy technique and syn gut or multi strings never get TE. Arming, no split step, no mini tennis … great elbows.
Yes, TE can educate you … will let you know if you missed the sweet spot, particularly if you hit near the tip. I saw light one day … more like lightning … on what they were referring to with “racquet recoil”.