SS (Starting Strength 3x5, 5x5 is the SL StrongLifts template) isn't inherently bad but for a perfect beginner such as I was when I first lifted, I think it would have been better if I had done any other program with a more emphasis on assistance, mobility and conditioning.
Mark Rippetoe will always answer that the best way to learn to squat is to squat, and that novices have so easy progress that even with only a 3x5 squat each training you will be able to grow your legs. It may be true, but it lacks the mid-term vision where you'll be quickly adding more weight to the bar that your movement patterns or your articulations will lag behind and you will eventually plateau way harder than if you were doing a less specific program.
A more balanced program like 5/3/1 for example may sounds full of "useless stuff" like assistance exercices, mobility drills or even conditioning recommendations but it's those things that will build the "base" that will then be used to lift heavy weights. It may even helps your joints to be better prepared to push on the compound exercices. For example, I had lot of pain in adductors at first when squatting heavier in SS that I never had after I properly train them a bit more on assistance exercices.
Also, SS will often respond those problems with things like "Eat more", "Sleep more", but your recovery has its limit too, even if you are a beginner.
To me, SS is better for people who has an already muscle & fitness base and want to introduce themselves in strength training, like football, soccer, basketball players. Or after a pause of few weeks/months, linear progression like SS or SL is better to quickly back to your previous weights.
I would however strongly encourage you to watch his videos on form and read the book for the form explanations which is really helpful, helping you understanding bar path, center of gravity on exercices like deadlift, etc.