Everyone is different with their preferences and parenting choices. It's not going to hurt him and you are not a 'bad parent' for doing this.
However....
I'm a 90's kid and was brought up on shop bought baby jars and a lot of processed frozen/ tinned food (think potato smileys, canned meatballs/ soup, white bread, chicken nuggets, findus crispy pancakes, corned beef etc.)
As an adult I'm obviously still alive and pretty healthy as far as I know.
But I have also been a bit overweight for most of my life, and I do get annoying cravings for processed junk. Despite now knowing what a healthy diet should look like, and my efforts to improve my diet in adulthood, I still get cravings for stuff I was fed as a kid. I eat healthily now, but I am often battling cravings which I think are the result of my childhood diet.
Another issue I had is that it took me a long time to expand my diet and try new foods, because I just wasn't exposed to them. Until my late teens really I was quite reluctant to eat things that were not 1) beige or 2) processed.
Whilst it's not going to hurt your child in any immediate way, I would highly recommend you mix it up with some fresh food as well and encourage trying new things. Yes it's an effort, but I believe the food we have in childhood really does impact our tastes for the rest of our lives.
It's not just about getting through the day and what's easy - you are setting a little person up for the rest of their adult life. Looking back I do wish that my parents had not fed me so much junk, although at the time they didn't know any better.