Yes, those exist.

A vicious system. Sooner or later, each account will receive its own trade ban, based on: Steam community members have complained about your account for cheating during the exchange. We have verified these allegations and made sure that they are justified, so we have blocked the exchange functions for your account beyond the possibility of recovery. As a result of this blocking, we have stripped your account of all features on the Steam trading platform and hidden your inventory.

Before applying such measures, we carefully study various information, including complaints of fraud and deception during the exchange.

Whenever a lock is imposed, it is final and cannot be lifted.

引用自 CosmoAnarchy：

A vicious system. Sooner or later, each account will receive its own trade ban, based on: Steam community members have complained about your account for cheating during the exchange. We have verified these allegations and made sure that they are justified, so we have blocked the exchange functions for your account beyond the possibility of recovery. As a result of this blocking, we have stripped your account of all features on the Steam trading platform and hidden your inventory.

Before applying such measures, we carefully study various information, including complaints of fraud and deception during the exchange.

Whenever a lock is imposed, it is final and cannot be lifted.

Not every account will receive a Trade ban.

引用自 CosmoAnarchy：

A vicious system. Sooner or later, each account will receive its own trade ban,

Who are you speaking for?

21+years on the service and I have not incurred a trade lock of any kind