From my perspective, Proton Pass remains significantly more useable compared to Proton Drive or Proton Calendar. However, it is essential to consider that Proton Pass has been available on the market for only about a year and is significantly less funded as @Lukas mentioned. Consequently, it cannot be expected to offer the same features as applications that have been developed and refined over the course of a decade. This disparity is understandable and acceptable. Nonetheless, it is reasonable to compare it to other services in terms of features, reliability, and pricing. Everyone is free to select the service that best meets his specific requirements.
We can be grateful that there are other well-established, privacy-respecting, and affordable password managers like Bitwarden or 1Password. In many (though not all) other software domains, opting for a privacy-focused alternative to well-established software often entails a substantial loss of features or convenience.