I am beginning to wonder how long it is going to take for the propane brewing stove to become a relic of the past. I know that what kept me from moving to all-grain brewing from partial-mash brewing earlier was the need to move outside with a propane stove. Back then, there were not many options when it came to large propane stoves. There were zero purpose-built brewing stoves. Most propane stoves were little more than a tube with a gas orifice that were designed for turkey frying. The nicest stove available to amateur brewers was the Superb PC-100. For only being a 35K BTU stove, the Superb PC-100 was better built than most of the modern brewing stoves. I am sorry that I sold mine back in the second half of the 90s.
With that said, the trend of amateur brewing moving to electric brewing is undeniable. From AIO units that operate on a standard 120V/15A house circuit to induction cooktops to full-blown automated electric breweries, I suspect that propane-based brewing will continue to lose favor. I remember the first time I was able to brew in my garage with the door shut in the middle of winter. The lack of propane hiss combined with the lack of winter cold entering my garage pretty much sealed the deal for me. Not having to have fire extinguisher at the ready was also nice. The only time I will use propane again is at an outdoor brewing event.