Thunderlords is a part of the reason games are so stupidly snowbally and downright unfun right now
Adds burst to champions (especially poke champions) for no reason at all. Nullifies retaliatory minion agro damage because the stronger laner will no longer take back enough damage to offset their combo with thunderlords added on. Causes the weaker laner to be pushed out of lane on repeat with no counterplay or safe farming options. Simply continues to escalate the lead of the stronger laner. Quickly ramps up to the point where 1 combo will push somebody out of the lane, or even instagib the opposing laner.
Really don't know what you're smoking Riot, the game has never been in such bad shape as it is right now.