If you can get the bonus, get it. It isn't taking advantage if you've payed taxes all your life, the idea is that everyone is entitled to aid from the government if on good times we pay our due.
I know a couple of people - small entrepreneurs, mainly, like my hairdresser - that despite not being able to work for the past, what, 4 months, doesn't qualify for any kind of aid. She's at her wits end, and attending people without permission, but if she doesn't do it then she doesn't eat. No matter that she's been paying all taxes, permissions and whatever, she doesn't qualify.
The handling of the aid has been a complete shitshow, if they instaured a simple basic income per person we would have avoided all this. Yes, there would still be unemployment after the pandemic winds down but the impact wouldn't be that big considering people would still have money in their pockets to spends, meaning commerce wouldn't be as down, so they wouldn't have had to fire so many people.
EDIT: I decided to see if I was able to get the bonus, and on first sight it seemed I could.... but now I'm stuck being part of the #Yotambienpuse0 bunch. So no help for me, just sanctions from the SII because these morons can't make the website without screwing up.