I read that a lot; however, as a now retired RN of 50 years, I've worked in emergency rooms ever since I started as a volunteer as a teen, and have seen just about everything. The 'pert and hard' ones can be due to scar tissue forming around the implant, or using the wrong (cheaper) type of implant, or the wrong size, etc.. Many men insist that the can spot 'fakes' every time. However, that is simply not true. Plastic surgery costs can be cheap or in the hundreds of thousands, or even millions of dollars. The best, and usually the most expensive plastic surgeons, can create augmented breasts which are almost impossible to tell from the real ones.
Like most other things in life, you usually get what you are willing to pay for; there aren't any bargain 'perfect breasts jobs' out there. Sure, you can fly to a foreign country and get DDD implants for $5000, but don't expect anything that looks like naturally grown ones.
I've dated several women with exquisitely done breast augmentations; without being told, I never would have guessed that they weren't 'home grown'. Those women were the type who were quite proud of their appearance, and seemed to love being seen nude or in very revealing clothing, and more than willing to show off the terrific work that they had done, getting those implants. The hardest things to hide are the incisions that have to be made, but a really talented plastic surgeon can hide even those.
Me? I've had boobs since I was about 9. Rapid weight fluctuations, and unintentional exposure to certain chemicals resulted in gynecomastia; A cups to start, and by the time I was in my 20's, about a B cup, which I've had ever since, even when I lost the extra weight. A blessing or a curse? Depends on how you look at it. As a crossdresser, definitely a blessing, as it gives me something to fill my bra. As a growing boy who had to start using the communal showers after physical education class from age 12 onward, definitely a curse; the teasing was a nightmare.