There is a fine line between explanation that you can’t afford things that they may want and making them worry about your financial issues.
My parents did this to myself and my sibling. My parents leaned heavily on me as the eldest as my mother was an alcoholic who lived on her nerves and wasn’t able to cope with things and my father was a weak man in general, he enabled her.
From about age 10 I was told about their money worries, exposed to regular arguememts about lack of money, told that maybe we wouldn’t be able to eat next week, that we could lose our home, that the bailiffs could knock the door etc. What the hell they expected me to do about it I don’t know, all it did was make us tense, worried children who were too scared to ask for anything, even essentials like clothing or toiletries.
My father had to go to court for non payment of the mortgage and I’ve never been so scared in all my life, my mother just blamed him for not having a decent job and kept crying and breaking down about the fact we’d be on streets. Thankfully it didn’t come to that.
As we grew older it didn’t stop, we just got leaned on more and more with occasional money being borrowed from us once we were working to scrape together mortgage payments. Looking back there was always money for drink and cigarettes though and they never learned - if there was ever any extra money it would be blown, never saved in case the shit hit the fan later at any time.
So yes, tread carefully, it’s messed my brother and I up quite a lot as adults.