Does this fall under assisting enemy team?

A teammate is literally stopping what they're doing to spectate the fight, and harass me.

I'm not upset at the fact that you are trash talking. I'm upset that you stopped playing the game to take the time to watch other people play the game, and harass them based on them fighting the enemy teams' strongest player. I mean, I didn't even notice it until I read your in-game message and noticed you were stationed between the tier 1 and tier 2 towers, because I was too focused on what I am doing to bother noticing what you are doing, like you should be doing. Twitch and Youtube have videos you can watch for a reason, you don't need to be watching other people in a ranked game that you queued up for.

Really? You're playing a poke champ that can attack enemies without being in the vicinity, and you have invulnerability to damage for a temporary period of time, and you're boasting about your KDR? You'd rather stop playing the game, to type and harass your allies who are giving their best effort to win the game, then walk to their lane and flank the enemy player, because clearly they need assistance dueling the enemy teams best player.

There are things going on in the game that you could be doing. You could be (as I said) flanking the enemy player who is out of position. You could be setting up ganks on a different lane. You could be showing map presence, notifying the enemy team that you are in the game, and are a threat to them. You could be farming creeps, farming jungle, shopping for more items, providing vision on the map so your team can fight safely. But you stop to harass your allies on their inability to win their lane against the enemy teams strongest player?

Am I insane? Does my level of morality prevent me from seeing something that i'm missing, or am I right on the money?

And you have the audacity to report me for intentionally feeding?