"Mina" is actually quite incorrect in her statements. "Hypertrophy" is a general term referring to sarcoplasmic hypertrophy, in which the interstitial material in the fascia becomes loaded with carbohydrates and bicarbonates to help energize and buffer them for both short to long training sessions. There's also myofibrillar hypertrophy which is lower repetitions, in which the "myofibrils" or actual strands within the muscle fascicles are trained not only to all flex at once(thus increasing efficiency) but also to quicken action response at the synapse to flex more powerfully with more total control, in other words POWER or STRENGTH(for some).
Both sarcoplasmic hypertrophy and myofibrillar hypertrophy are achieved no matter what rep range. The thing is, not all exercises are designed for low rep max efforts nor are all designed for high reps. Only perform exercises that have a simple, coordinated plane of movement for maximum effort exercises and save the ones that are possibly more accident prone for high reps.
Always switch things up, do high reps for two weeks then low reps the next, or switch it up every other workout so that you train to the max one workout and then push blood into the muscles with high reps the next workout.
Lactic acid, produced by higher rep training, is amazingly healthy for joints and ligaments. High rep workouts going from exercise to exercise with little to NO rest that keep the muscle pumped with blood for 30 minutes to an hour have been associated with decreased joint soreness and abrasion as the high blood flow encourages the bursa to lubricate the joints.
Also, high rep training can be used for strength training. There's a reason sprinting(which is technically a high repetition series of partial range of motion lunges) is incorperated into most olympic lifting routines, strongman routines, and powerlifting routines, the three sports on the planet most competitive in strength and power. A very distinquished coach, Mr. Sommer, wrote about how he knew a gymnast who had never touched a barbell in his life and only did pullups and other calisthenic exercises utilizing extremely high reps deadlifted over 400 pounds on his FIRST gym workout.
Use it all, don't focus on strength training of you want to look like a man or you'll just end up another fat man who's only excuse to have any self esteem is that, "well I can bench more than you can." At the same time don't turn into a musclehead who thinks he's ALL THAT because his arms are huge but he wouldn't last 30 seconds in a real fight because his heart would give out.
Balance, moderation, and above all determination are what you need to achieve your goal.
Get to it.
