Please, could you verify/explain this statement?
In contrary - I think the DC-stability of the circuit against temperature changes is proportional to the loop gain LG=-gm*Re .

Post #12 was referring to raising the AC gain without compromising the DC stability.
You do this by keeping the emitter resistance the same but adding AC bypass to a portion of the resistance.

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Yeah exactly, thats what i told that guy too

 

Okay, but the temperature change effect at a DC gain of two would not be significant over normal temperature changes.

Yes - of course.
Perhaps a small misunderstanding- when I read something about "DC stability" I immediately have the stability of the DC operating point in mind (and not the gain).

 

I immediately have the stability of the DC operating point in mind

That also will be little changed for a DC gain of 2.

 

Depends on what you mean by a DC gain of 2.
That is more difficult to do with a simple common emitter amplifier. If you truly want a DC gain of 2, you need to be looking at op amp circuits.

 

That also will be little changed for a DC gain of 2.

As I wrote before - the stability of the DC operating point depends on loop gain (gm*Re), am I wrong?
Hence, the collector resistance Rc - and with it the gain of the stage - does not influence this stability.
Any temperature-induced variation of Ie will influence the voltage drop Vbe=Vb-IeRe (effect of negative feedback) - independent on the Rc-value.