Quote from HugSeal »6. You are old school and don't think RDW has been an archetype since pretty much forever?
It has and it hasn't. The original mono red deck in this vein was Sligh, played by Paul Sligh, and it was a janky mess due to the deckbuilding restrictions at the time but it pioneered the concept of the mana curve. Fast forward to the original Mirrodin era and that's when you have the first modern-ish incarnation of "Red Deck Wins" where the deck has so many avenues to bypass defenses (blocking, counters due to activated abilities, etc) that the red deck "just wins." Notably the difference between Sligh and RDW is that Sligh wants to burn away potential blockers and RDW tends to place less emphasis on preserving its board.
Then you have variants like Big Red (which has been a thing since forever because Mana Flare + Fireball was tech in the early to mid 90s), Ponza (red control), Goblins, and of course, Burn. The main addition Burn brings to the table is the sheer amount of redundancy it has, substituting threat quality (each individual Bolt only ever deals 3 damage) for threat density (you've got a lot more Bolts than they have business spells).
Burn, traditionally, is actually highly skill intensive and only gets even more skill intensive after sideboarding, so it sounds like Arena's BO1 is the problem rather than red per se. This could just as well be white weenie or green stompy and the problem would be the same.