En Bloc through areola incision?

It is impossible to do an EN BLOC through a nipple areola incision and ABSOLUTELY not recommended. The dissection in the right plane, especially on top of the rib through a small incision is virtually impossible. A horizontal incision in the crease is safe and practical for removing the entire implant and capsule, in EN BLOC/total capsulectomy fashion.

It might be possible, but I would not typically advise en bloc removal without a clear reason to do so, because the risk of complications is higher than implant removal and a complete capsulectomy (not en bloc). If removing an implant en bloc, I would not typically do it through a periareolar incision. It might not be possible depending on the size of implants, the grade of capsular contracture, the size of your areola, etc, and even if it is possible it would be better visualization to perform the operation safely. See a plastic surgeon and discuss your options with them!

The danger of taking out an implant en bloc under the muscle isn’t small. To do so you would want the best visualisation possible. That’s usually done through an incision in the fold. Larger than one you would place an implant through. Doing so through a periareola incision I don’t think is possible.
The only indication for a true en bloc capsulectomy is cancer. Otherwise, literature suggests a subtotal capsulectomy (most of the capsule) is acceptable for contracture or breast implant illness.
I think you need a good consultation to understand your reasoning for desiring explanation. Hope that helps.

It depends on the diameter of your areola, the length of the scar, the severity of capsular contracture (if present), the size of the implant, and the type of implant (saline vs. silicone). If one or both implants are ruptured and they are silicone, cleaning can be very difficult. In general, it is more difficult to use the peri areolar approach than the inframammary fold incision because the IMF incision places the surgeon in a better overall position to remove submuscular implants and capsules The increased difficulty of using a short incision with a small diameter areola can increase the risk of surgery due to relatively poor visiualization.

A lot depends on what size your implants are but I would not advise trying an en bloc removal through an areolar incision. Also, recent studies show that en bloc isn't necessary most of the time; you can get just as much benefit with total capsulectomy or even partial capsulectomy. En bloc is a radical and riskier operation.