Its a good plan to flush the brake fluid yearly and change brake lines that are not hard tube every 7 years at minimum. Brake fluid absorbs moisture from the atmosphere despite the systems being sealed. The owner's manual states the brake fluid should be checked every 6400 Km and replaced every two years. The check is important as when you see it even begin to turn color, change it out. If you ride in the rain, dusty condition then service should be more frequent.
The dealer that advised the risers would cause the brake lever to lock is misinformed. While pressure on the brake line could cause a brake to engage it would happen when the handlebars were turned to cause it, not when straight.
Never underestimate a dealer's incentive to take the path of least resistance especially when it comes to your safety. One way to get a dealer to be completely transparent about their diagnosis is to ask them for it in writing. Its amazing how things change when you ask for a written diagnosis because then they have to stand behind it with their service license as collateral.
Honda isn't going to read forum posts and act on them, they are not evidence of anything and relying on a forum to initiate a recall just creates a huge liability problem; no one really knows the whys or variables involved. If you're not changing your brake fluid yearly or at minimum according to the maintenance schedule then when things like the ABS pumps and so on fail it's more like due to lack of maintenance than a defect.