A common trait among the motorglider haters ("purist" is a misleading word for them, there are plenty of pilots who prefer non motor gliders without the hate for others), is they are absolutely sure of the advantage and mindset in a motorglider without the slightest experience in one. Nearly all motorglider pilots have at least some time (and usually a lot of time) in non motor gliders, and have opinions based on experience in both.

Regarding the oil solidifying, that isn't an issue with a pre-mixed 2-stroke but would be with a frozen Rotax 914 crankcase. Also an issue with the Wankel, and a brief warmup may not do much good as the oil tank is a bit remote from the engine. Schleicher recommends a warm up after flying at high altitudes but it could take many minutes for the oil tank to warm, during which time you may have limited or no lubrication.
On Tuesday, April 27, 2021 at 6:02:00 PM UTC-7, wrote:
On 4/23/2021 7:48 PM, Andrzej Kobus wrote:
Bob, repeating the same thing over and over again does not make it true..

Andrej! Apparently you haven't been following USA politics!
He's just emulating, well, you know...