I think Poland understands the need for like interested chemists, easy industry, etc. It might actually stay a sizable industrial power rather then being pidgonholed into some esoteric market like some other EU nations. If you have a good chemical industry thats a high degree of autonomy that means that your kinda self sufficient. You have plenty of implemented experts (not people who have the knowledge and no way to use it, aka will leave at first sign of trouble). It's harder for other people to 'pull your strings.' Of course its all interconnected but it must mean something during international negotiations.
But also I think its important to remember the gun killed 63 people, the bomb killed 8 and wasted his time and money. I guess it did injure alot though. Not saying which one is worse, but the gun is certainly easier. He had to make a cover story, front companies, business plan, etc (not to mention construction and transport), I think he had to develop quite a criminal mastermind scheme to implement that bomb plan. While with the gun its just 'hi, i like to shoot things, here is $500'. If he put that bomb money into training others, he could have done even more damage.

For those interested in a (sad) song about the event, search for
Röyksopp & Susanne Sundfør ► Running To The Sea (Studio Version)
I don't think its appropriate to link the video in a discussion this serious directly because its still kind of a fun song, if you don't know why it was written.
I imagine there is alot of opportunities in Poland for industrial chemists, since there is alot of heating plants (which themselves benefit from things like air pollution filter research, corrosion research) and there is bound to be a increase for self made advanced goods due to the Europe situation, with the amount of strife the Ukraine war put into the eastern European states. It seems like anything can happen there politically (maybe not in Poland, but the other post-soviet states)...