I don't think anyone views you or Bashi as a fanboy (at least I hope not), more akin to the isolationists leading up to WWII.
We've been dancing with Russia since the end of WW II with ups and downs on both sides. The collapse of the FSU gave hope for long-term peace. Even the proxy conflicts abated for many years. However, with the rise of Putin and his desire to rebuild the FSU we have seen him reaching beyond Russia's borders through both direct and indirect action. I certainly understand the view of taking care of our borders and feeding our people here at home, but I also see the long-term danger of leaving Putin's actions unchecked.
As a person with a strategic view I think my side of the argument sees the dangers as far more pressing and concerning than just territory lost in Ukraine. The second and third order effects destabilize everything and yes I think it emboldens Putin to go further. Energy markets, the world's food supply and a land war in Europe are not trivial matters to be ignored.
One of the biggest mistakes we make as Americans is we tend to think our adversaries will act rationally as we would. Of course Putin wouldn't invade invade Poland, that would be foolish, right? Putin is a dictator, a ruthless one and if you step back and look at the things he is willing to do (employing chemical and radioactive material ON NATO SOIL, genocide, taking territory by force), it is not a stretch to think he might make other actions that we would consider irrational.
Bullies respond to force and the tougher we make the fight in Ukraine for Putin I believe the lower the chance Putin takes aggressive action elsewhere.