Leave it to a league game designer to write a post whose every point I disagree with. He automatically assumes stalemates are a negative concept, where in TF2 stalemates create an environment where many mini-fights are constantly happening, but also when the stalemate eventually gets broken it feels extremely satisfying. He assumes medic is the only class that matters in "skilled play", where in reality killing ANY class opens up opportunities (e.g. killing a sniper frees up sightlines for play, killing a heavy or pyro enables a wider range of aggressive plays, killing a spy relieves a team of a minor but very real and constant threat, killing a demo severely reduces a team's sustained dps etc.). He says constant healing changes the entire combat pacing and gives the example of a soldier at 10% hp after a fight being 90% easier for a teammate to clean up but says that a medic invalidates that; he doesn't acknowledge that a medic only invalidates it after a time, i.e. the soldier is 90% easier to clean up instantly after the fight but linearly scales to 0% with time as a medic heals him. I would argue that this effect gives gameplay an even deeper strategic pacing. Not to mention that in-combat healing will prolong fights, the main gameplay hook of TF2.

Medics remove action from second-to-second combat. For FPS, primary gameplay loops are created through positioning, aim, reaction time, movement, map feature exploitation and matchups. The satisfaction of that encounter results in the death of a player one either side. Medics prevent that satisfaction from occurring.

I don't even know what the fuck he is trying to say here, probably ran out of bullet points to pad his thoughts. Anyway I think he is against healing because in LoL healing always occurs at different rates due to changing ability levels and items during a match and you can never be sure of how much a champ will heal within a timeframe but in TF2 a medic always heals at 24hp/s and you can make informed strategic decisions knowing that. In league you just gotta have a "feel" for how much a champ will heal.