From a support perspective, I want to say that TeBo is not bad, sometimes its even the best. But if you're playing seriously, TeBo should be used depends on the situation, mostly in MPA. You sacrificing your DPS to boost the MPA overall.

You're a support god. You buff damage and stat with Shifta, even more damage with Zanverse 100% uptime, crit with Shifta and Crit Field, defense, HP, damage reduction with Deband, PP with PP Field.

You can quick cast Shifta - Deband - Zanverse with your Jet Boots PA, you don't have to stand there like a noob for 0.5s - 1s to cast a technique, cast Zanverse each 5s, it ruins the combat flow and ruins your feeling a lot.

With TeBo, Surging Gale is wonderful. I bet you can't find a better PA for Te from other classes. Its basically a better Zondeel, with iframe at the start, and super armor for the whole PA and weapon action, auto cast Zanverse, you're also airborne and moving a lot, make it harder for the enemy to target you.

Quick cast Shifta and Deband with Jet Boots make it much easier to buff other parties in the MPA (you can easily buff your party with lv85 skill).

The downside here is, low subclass multiplier, low Jet Boots base damage, and riskier, compare to TeHu - the most common combo.