The Majority of Stellar Evolution Happens Inside of Red/Brown Dwarf Stages as it Stands, Stellar Metamorphosis

dwarf	K	Rsun	Msun	Lsun	Mag	AU	hr	hr	%
M0	3800	0.62	0.60	7.2	9.34	0.268	1571	5.37	0.022
M1	3600	0.49	0.49	3.5	9.65	0.190	1039	3.96	0.035
M2	3400	0.44	0.44	2.3	10.12	0.152	786	3.36	0.043
M3	3250	0.39	0.36	1.5	11.15	0.123	633	2.96	0.055
M4	3100	0.262	0.20	0.55	12.13	0.075	401	2.06	0.124
M5	2800	0.20	0.14	0.22	16.0	0.047	238	1.50	0.209
M6	2600	0.15	0.10	0.09	16.6	0.030	147	1.07	0.372
M7	2500	0.12	~0.09	0.05	18.8	0.022	98	0.78	0.582
M8	2400	0.11	~0.08	0.03	19.8	0.019	81	0.69	0.69
M9	2300	0.08	~0.075	0.015	17.4	0.013	46	0.43	1.31

If you'll notice, the temperature of M0 to M9 drops 1500 Kelvin. The radius diminishes close to a factor of 10, and the luminosity almost falls off the chart. .015 the luminosity of the Sun for M9 red dwarfs.

Why not just keep on going to M10, M11, M12, M13, M14 based on temperature measurements? No need. They have temperature measurements encompassing brown dwarfs between 2200 and 750K.

This means for red dwarfs the temp field is ~1500 K, and for brown dwarfs it is 1450K. An almost full 3000K drop in temperature as the stars evolve from being visible and over half the size of the Sun, to not having a visible spectrum.

The star begins disappearing in these two classifications, red and brown dwarf stages of evolution. That's pretty cool and of course, not mentioned in the accepted literature. The accepted literature has stars as keeping their mass as the evolve, yet clearly we see that isn't the case. As they cool and die they shrink and lose mass, meaning any evolutionary models which rely on mass determining what happens to the star are not only incomplete, but misguided.