This is not a quality issue. The Keychron low-profile optical red switches tend to be more sensitive than other variants because they require a lighter operating force (as the picture illustrates below), which may not be ideal for heavy typists. If you feel that the Keychron optical red switches are far more sensitive than you expected, it is recommended to try the other variants with a bit more operating force.
In addition, you may take a look at this tutorial to learn about how to lessen the sensitivity of the Keychron low-profile optical switches (applicable for red switches as well). Hope this helps.
Please feel free to let us know if you have any questions. Thank you.
Keychron low profile optical switch features: