As this has piqued my curiosity I went through our records ;
On 28th October last year 2 stations in the Pleiades started burning - Copernicus Observatory in Asterope and Ieyasu Dock in Pleiades Sector PD-S b4-0, along with some stations in Witch Head.
The next week, November 4th, both stations in the Pleiades stopped burning even though heavy Incursions remained in those systems while a new station, Arc's Faith in HR 1183, began burning.
The following week, 11th November, Ieyasu Dock in Pleiades Sector PD-S b4-0 began burning again after a week in repair.
I would put this down to Odyssey except this start stop start again behaviour didn't happen until after the Cornsar event, which is why I suspect fdev hand of godding it for story purposes or possibly causing a bug to happen at that time.
Since then in late November and through December we had more of the same and even had some stations burning in systems where there was no Incursion at all, just to confuse matters further. Not NMLA either, but Thargoids. That was also when we saw the most stations burning since attacks began with 14 on November 18th, 17 on November 25th, 19 on 2nd December and a record 24 stations on fire on 9th December.
After that Salvation used his superweapon and all 24 stations went into repair, despite many of those systems still having Incursions. During the period that followed, while no stations burned this was when fdev were reinforcing Incursions as fast as they were being reduced, which was questioned by AXI at the time and confirmed to be deliberate.
Since then we have had 2 in February this year, 1 in March and then the 2 last week and 1 this week.
So I think the point stands that burning stations have become somewhat disconnected from the state of Incursion since Cornsar, going from burning continuously until an Incursion ends to burning on and off while an Incursion exists or sometimes even burning with no Incursion at all.