Do people even know what "pay to win" actually means? Is the potion giving you stupidly boosted stats? Is it giving the user access to broken gear not available in game or only accessible after an insane amount of playtime? I'm pretty sure the answers are no and no. Ragnarok Online is a better example of the 'pay to win' argument with stupid op gear and upgrade items only available from it's cash shop. The only things in this game's cash shop are dyes, some mounts, some furniture, clothes and QoL stuff.

A jump potion is not 'pay to win' it's 'pay to catch up'. There IS a difference.