That's because the last decade of improvements at GSuite aren't for you. They're to satisfy made up requirements by Government and Enterprise IT departments, with the rest of the energy sucked out by European Regulations. Data location and retention policies, privacy, logging, data export, legal, etc etc.
What do any of those have to do with the worsening UI of their products? I don't recall seeing a button in Maps allowing me to download my browsing history.
GDPR also can't be implemented in the UI layer, because it would also apply to the IMAP/Gmail API, which doesn't suck... at least from a user perspective. Gmail is just fine in a real email client.