Me - I have the exact same bulbs in my off grid property, and in my on-grid property. On grid, it's about 18 months MTBF. Off grid - it's been seven years and I haven't had to replace a single bulb yet. On-grid our power is anywhere between 205 and 235v, often has spikes up to 260+, and has like 99% uptime. Off grid, it's 230v, day in, day out. Grid power is terrible in most places.
Now if only DC wiring and appliances were more common/mature, could possibly drop the “inverter” part altogether. If I were single I’d try more seriously for a full-DC system, but as a married man I’ll probably just stick with everything AC.
A sensible first step is just a little rack of cheap lithiums (I’m using pylontech) and an inverter charger like a victron multiplus - planning on adding to our on-grid home as it has become tedious dealing with the outages.
I have this issue as well, of burning thru LED lights.