Is it true that I could spoil my baby by picking him up every time he cries? It just gets frustrating when he keeps crying.

You're probably doing more good than harm by picking your child up, or even carrying him away from "toxic situations". The older generations might say things like "you're spoiling him" or "always like that next time confirm ...", but know that your child wouldn't cry if nothing's wrong. Like what most mummies said, the only way that the little ones can communicate with us is through crying and babbling (before actually talking). So if you ignore his cries or babbles, or tell him to "shut up" (my parents say this so using as example), it gives the impression that 1) you do not care about his discomfort/feelings and 2) he cannot be open to you. In fact, if you ignore cries or let babies sooth themselves too early (yes, they can do it but there are many different ways and stages to do it - not from newborn stage), they will have the impression that they cannot rely on you - and this goes into their childhood and even adulthood.