Are you suggesting that people should not use healing mage in their build until it's clarified what it is intended to work on? I mean they might be using a bug and not realize it.
Absorb magicka gives you a ton of sustain though. With infused it's gonna be around 160 magicka per second and with torugs it is over 200 magicka per second. If you're talking magblade it might not be
WW premades that have been abusing the infused Torugs bug for MONTHS, for example. They tell you to L2P and “counter” their stacked build, which is not possible when queued as a pug. Only coordinated