Role Stealing Without Saying Anything is Bannable?

[removed by moderation]

So in champ select I lock in Morgana, then the player who has been assigned ADC chooses Yuumi right before the timer runs out (they were last pick).

I don't want to dodge so I play out the game with two of us having support items because I don't want to play full AP Morgana (I'm a support main and only play support).

So, long story short, we end up losing lane pretty hard because neither me nor Yuumi are taking minions (support item kind of prevents that) and lose pretty hard to early level difference.

I do get a few kills here and there but we end up losing because of this.

I didn't report post game because of the nature of the player's actions and how I don't think the automated system would do anything, but I want to know if I write a ticket to player support explaining the situation, would anything come of it?

Edit: I want to summarise a few things.

• I was assigned support (the role I queued for).
• Yuumi was assigned bot/ADC (whatever you want to call it).
• Yuumi was the last person to lock in, intending no champ through all of champ select but locking in Yuumi near the very end.
• This was a draft pick game (y'know bans and roles).
• Yuumi started with the support item and did not make any attempt to play the role assigned to them -- they played exactly like a support.
• Yuumi did not communicate at all in the pre-game lobby, in-game or post-game lobby.