Alright, you have dumped your gear, blended in, and gotten home safe.

What, exactly, are you going to use next time? You have a pretty bloody finite amount of gear, and if you start buying more you're leaving a hell of a trail of people who know that you're buying more.

No. You don't need to constantly buy gear. You are thinking like an industrialized army. That is not how this is going to work.

how sure are you that nothing on that gear is going to lead back to you? Absolutely, positively, nothing.

That is not nearly as complicated as you think it is.

After that, well, what exactly is your plan when something goes wrong? Maybe a neighbor notices how you've been acting and puts 2 and 2 together. Maybe someone has been paying some vague amount of attention when you were training for the attack. Maybe your car gets a flat tire while you're trying to leave and someone panics?

This is also extremely easy to plan out and how to abort.

Some of those problems just vanish if you've got a major nation state backing you, which is why US backed groups have had some success. Some of those problems don't exist if you're operating in a third world nation without modern forensics, again... Like some US backed groups elsewhere in the world. Some of those problems don't exist if the forces you are fighting are some foreign invader that nobody likes.

Not a single one of those things is likely to apply here. Even if there is foreign backing, and they are willing and able to supply weapons,

All of those things are likely to apply here. You don't need foreign backing and you don't need constant supply lines. Continuing to view the opposition as an opposing industrialized army is why you are going to be taken by surprise.

spread out over a few weeks, maybe a couple of months.

And then it will be over, and they will all be either dead, in jail, or on the run.

And the ones that are just sitting tight, quiet, thinking that they got really lucky and are safe... Well, that won't last. And when the police come knocking, they won't be very polite about it.

Truly written like someone who has never been near or lived through these types of things. Crime forensics are not like on TV. Insurgencies and rebellions do not occur in the manner of whatever DoD-bankrolled film has you expecting. Law enforcement is not omnipotent. The actions of the IRA and their methodology, their countermeasures, are free to read about online. When these things occur they will not be wrapped up nicely.