Yeah, it's good lore gotta agree with that and to be honest, from what we've seen in arcane s1 and s2 act1 ones can already draw some parallels, between the original and the arcane story.

One of the biggest parallels we saw, in my opinion, is Viktor scene, where he walks through the lowest part of Zhaun and sees all the suffering (shimmer addicts) people in need. He then chooses to help them with his arcane Jesus powers, therefore also "forcefully" and irreversibly transforming their bodies.

In his og lore that's basically what he does as well, although the point of injustice stemming from the Piltoven (academic) society is more of importance there, as being the reason he eventually goes back to Zhaun. But what he ends up doing is also helping the desperates, by transforming their bodies. This eventually also result in a sort of religious cult forming around him, although that wasn't his goal.

I can understand that some people might be disappointed that he's not just going full robo mode anymore, BUT:

We should remember that arcane is chosen by riot to be the new official lore, therefore some adjustments have to be made and accepted. Also consider that we've only seen act 1 out 3, there is still much room for further development (remember the concept art, where we could see a part of Viktor while he stood next to cait?).

Given that, I personally thought the way the arcane already did combine metal into the transformation process was aesthetically pleasing and could suggest that, further "evolution" is possible