Assuming you on a Mac OS, the translucency is controlled by the operating system.
See here: Monterey (Mac OS) change transparency 'My Computer My Way' (https://mcmw.abilitynet.org.uk/how-to-reduce-transparency-effects-in-macos-12-monterey?utm_source=google&utm_medium=cpc&utm_campaign=Dynamic-Search-MCMW&gclid=EAIaIQobChMI-Mun6bODgAMVf4lQBh3omQerEAAYASAAEgKpMvD_BwE)
Yes, there is a way to disable translucent drop-down menus in Photoshop. To do this, follow these steps:
Open Photoshop.
Go to Edit > Preferences > Interface.
In the Interface preferences, uncheck the Use Legacy Drop-Down Menus checkbox.
Click OK to save your changes.
Once you have disabled translucent drop-down menus, they will no longer be acceptable. They will instead be opaque, which may make them easier to see and use.