Buddy, the only people who don't RP before destroying Core 1s are either
a. Lolindies with low forum presence
or
b. OoRPly hate you
or
c. Both
Why? Money. It's often easier to tax PoBs than blow them up, unless they are an enemy military fortification, in which case, unless the base has RP up and running first, it's open season.
The way I see it, if I get a base thread, I'm golden, because then people will know that I will communicate with them, and they can hopefully attempt to extract sums of money from me so my base doesn't get blown up (by them).
Core 1s are also the most expendable of bases, because, as stated earlier, it's a half-hour of effort to build one, tops.
I was referring to the KSP blowing up that other KSP base in his KSP ship (suspend your disbelief).
So, to recap, interaction does happen, provided you give them an avenue to roleplay on. If I were to make a base with a communication thread, I would be more likely to get a comm about said base and come to an agreement with those than me simply dropping a base and giving it a brief infocard. The community is nice enough to not immediately blow you out of the sky if they see that you are willing to roleplay.
About that guy, my advice to you is to go to his faction leader(s) and tell them about it. No need to complain to the community about him.
And about the forum sig, the quote was generously given to me by an Order| Orca (Order|[REDACTED]) to a Core| Spatial (Core|Byron.Hall) who had just told him in OoRP chat that if it came down to a pew, he'd return the Azurite the Gunboat had in its hold.