I would not agree 100% with this... I would state it this way: Some years ago some wery FEW pilots did fly small motorgliders at 1,5 - 2 meter with pretty limp performance. The choices spent from 280 to 700 brushed motors, and most modelflyers didn`t see any reason to fly such ships. My 2C only...

I have tried both small "pylonracers" and sailplanes equipped with brushed motors, but the performance were so bad I just put them in the garage. These same planes have got new life and I enjoy them a lot with brushless and LiPo Double the power and reduced weight compared to brushed and NiCd.

Also remember that the revolusion we did have some 4 years ago were not only brushless, but also LiIon. These two things together are a giant leap! Another important factor is the not unknown "gadget-factor" of course. More staff to tweak with, which made this fantastic hobby even more fantastic. Happiness is to always have a packet of gadget on it way to the mailbox