You have a point, but Comfey who has a better healing move which gains priority (+3) thanks to triage and aromatherapy which definitely helps with status moves would make it a better support mon. Granted ribombee is faster with some good stab offensive moves as well as the capability of having aromatherapy as well, it's bug typing gives it a slight disadvantage comparing it to comfey because of the additional weaknesses which are more apparent in the meta of rock sliding heat waving spammers. While Ribombee may have the advantage in its god tier `124 base speed' its more frail than Comfey comparing its 60/60/70 defences to 51/90/110 defences of Comfey.
Comfey also has access to Grassy Terrain which can help to remove the terrain brought by other Tapu's barring Bulu, but most importantly it can remove the annoying psychic terrain of Tapu Lele at will which could be valuable depending on the situation.
Fun note - a stupid combo i came across while trying out BSdoubles was running into a comfey with an AV mudsdale..... that mudsdale did not die ....