I'd say that pushing OO for the sake of using OO is not a single bit better than to never use OO. You're both focussed on a single methodology, pushing for it without looking at the problem.

Some problems are better solved using OO. Some problems are better solved by avoiding OO. Most problems can be solved either way, and whether you use OO or something else is a matter of preference.

As for the "numerous subs", solving the same problem using OO typically requires at least the same amount of methods, and often more, because you'll have methods with the same name in different classes.