Not at all Anni - nobody is talking about the risk of facing pvp when being not prepared. In working implementations the risk is greatly reduced and the attacker has to invest a lot while he won't be successfull if he doesnt do everything right and the victim does everything wrong. Then still odds are against him since he flags himself. Now if the PVE Com starts to have a go at each other after helping out a fella - thats a whole different part.
Being afk would be 1 thing to do wrong - manouvering into a deadend also would be one thing - but both only when lurking around in a sector where protection isnt dense enough for you to survive also is (depends on yourself, the attacker and the priority at which the guards would interrupt).
Given the guard system comes from above and the response time of defending guards depends on the vicinity of major routes, terminals and OPs AND was tied to faction standing - you could even reduce those few possibilities to 0 and the attacker wouldnt know - and itd be russian roulette for him still if he did everything right and caught a supposedly "weaker guy" offguard in a deserted alpha site.
Guard intervention at most protected areas would be a mezz and nearly insta pop for even the heaviest attackers, while an attack at a "perfect" situation: afk, weak unprepared miner caught in a lower sec area with no faction standings, arkhe for instance - would result in a dead arkhe and a pvp flagged guy getting shot at and mezzed while trying to reach a port to Beta - the only way to go for him.
Increasing number of guards and increasing waves would shatter even biggest raids. This system isnt meant to make griefing viable.
MO does something similar, though less complex - when being attacked you just type: guards and the attacker is popped instantly. The techn ical implementation in MO is pretty bad - but its effective. Once in a while somone got attacked when doing everything wrong - but the attackers got away only if the victim was afk - or the bug ridden game killed the implementation.
Now this method and chances of a surviving such an incident would neet to be recreated by an autonom system - as shown above.
And still lots of pvpers would try it though their chances are nearly null - why? Because they even have fun loosing their stuff while trying something with a success ratio of 1-2% to get away flagged to Beta where they get *** by others again.
Its just about trying.