I don't think beginners should be pushing a high squat number if they don't squat properly. This goes double for more "dangerous" lifts like deadlift etc.

As someone who started early in life, I'd recommend a "workout progression" of 3x10 -> 3x5 -> 3x8 -> 3x5, with the 3x8 usually representing a "cutting" cycle (caloric deficit focusing on fat loss, with lifting thrown in to maintain current number as much as possible). First you learn form, then push for numbers, then push for leaner muscle, then push for numbers again.

To each his own, but form is important!