Just don't set up trade routes then, no trade no piracy
Several problems with that point
1. They are set up automatically, and I'm not sure they can be completely disabled
2. There are big red markers that are unpleasant to see.
3. Giving up a possible source of income is never good
4. It better to let the system run and ignore it than to not use it.
5. The system could legitimately be improved, including by removal. Your comment doesn't really add anything to the discourse.
The problem with trade is that it is the only form of Logistics we have in the game, because trade is such a small and unimportant resource the developers can safely ignore it leading to Atrophy. If all of the resources in the game had to use Logistics then Trade and Piracy would not have atrophied this bad. It's the exact same problem as ground armies, it's a small part of the game that because it is small it atrophied. The question isn't wether or not the game would be better if the system were reworked, you very much could rework either system to make it a fun and engaging part of the game.
The question is whether it's worth the Return on Investment to rework it, it's a High risk investment, there are a lot of ideas on how to improve the system, Several are too much or too little for the amount of Return available (building a whole HOI 4 in Stellaris won't be worth it). Some ideas only sound good in theory, or may end up with poor numbers ala Anglers Civic that results in the impression that it was only good in theory. Some ideas would likely result in negative externalities, bugs or exploits may invalidate other systems or the reworked system, cargo ships sounds like a great idea, if you've ever played with the living systems mod you'll know that yes they make your empire feel more alive with the Hustle and Bustle of Civilian Traffic, but the performance impact is so harsh that ultimately it isn't worth it. The window on ideas that can improve the system, that makes it fun and engaging, that doesn't cause severe negative externalities, is actually really small.
Armies and trade are both small systems that are unimportant to most of the game, it's how they've been allowed to Atrophy, this results in the idea that the Return on improving either system would be low. High risk low reward investments are typically bad investments. Removing the Atrophied systems may sometimes be the better option. Several Developers want to do away with armies altogether, their opinion isn't wrong, it's just disappointing and hard to accept.