I think so. Defensive spirits promote a degenerate playstyle full of leeroying and other bad junk. Most of the time, if your defensive spirits go down for whatever reason, you'll proceed to wipe because you didn't take the time to pull properly. On the other hand, Minions takes care of annoying hexes and a large amount of the AoE that would have fallen to the party. They also keep enemy melee from screwing up your casters by providing a meatshield. Minions can also actually do damage through Death Nova and random 10s, while ST is a purely defensive build.
Minions promote a far more degenerative play-style than defencive spirits do. Every single meatwall reliant build requires a "charge from mob to mob as fast as possible" mindset.
It's also laughable that you'd mock defencive spirits if they "go down for whatever reason". Minion-bombers are constantly plagued the same issues, except they're even worse about it. Low on corpses? Minionwall is thin. Minions die too fast? Minionwall is gone. Minions dying off while running from point A to point B? Minionwall is rotting away.
Defencive Spirits are far more reliable than Minions could ever be, except for damage. However, ST gives so much defencive strength that you can focus your other builds on damage with much less worry.
It's also laughable that you'd mock defencive spirits if they "go down for whatever reason". Minion-bombers are constantly plagued the same issues, except they're even worse about it. Low on corpses? Minionwall is thin. Minions die too fast? Minionwall is gone. Minions dying off while running from point A to point B? Minionwall is rotting away.
Defencive Spirits are far more reliable than Minions could ever be, except for damage. However, ST gives so much defencive strength that you can focus your other builds on damage with much less worry.

I been tanking left side btw, not right.