First of all this odin kid is a douche for flaming someone's opinion. However, he only said "ask anyone if arcanes is good", which implies that he thinks they are quite bad in the current meta. You are trying to rephrase his opinion into the fact that arcanes is "never picked up". Idk what the convo is in its entirety but to me it seems you're actively trying to make his opinion extreme so ppl would agree with you.

As for you (the OP), I think you need to chill the fuck out. Just reading your responses below I can tell you're just like the odin kid (not surprised as it takes 2 to flame). You literately have like the shittiest attitude I've seen around dota. Everyone recognizes that arcanes are not in the meta currently, and that in MOST circumstances, a soul ring/tranq would be preferred. Yet you continue to talk about the same specific situation where arcanes is decently useful (giving your cores mana). News flash, even with that in consideration, given the fact you're not pushing/grouping for most of the game, soul/tranq > arcane. It's a pretty simple fact. A pro getting arcane once in a while in the hundreds of pro matches we have doesn't "disprove" the fact that tranq/soul is better than arcanes.

Arcanes give mana to your cores yes, but if you look at how supports are played, you are not grouped around your cores even 10% of the game. Soul/Tranq gives you more movement speed, survivability, farmability, and sustain. A poor underleveled support is useless, and that's exactly what you'll be when you pour 1450g into a shity item that's ONLY benefits your team when grouped. Alternatively, soul/tranq allows you to be tankier, farm neutrals/creeps better, ward more efficiently via speed, and stay in lane for exp/gold.

TLDR: don't get a rage boner with some other retard online, make a shit post, find out you're wrong, then be incapable of admitting it and instead flame others.