According to statistics from the Firefox Telemetry service, which analyzes data received as a result of sending telemetry and users accessing Mozilla servers, the share of Firefox Linux users working in environments based on the Wayland protocol does not exceed 10%. 90% of Firefox users on Linux continue to use the X11 protocol. A pure Wayland environment is used by about 5-7% of Linux users, and XWayland by about 2%. On weekends, the number of users from Walyand increases.
The information used for the report covers approximately 1% of the telemetry received from Firefox Linux users. The result can be greatly affected by disabling telemetry in Firefox packages offered on some Linux distributions (Fedora has telemetry enabled). In terms of operating systems, about 86.5% of Firefox users use Windows, approximately 6.2% use macOS, and 5% use Linux.
Source: opennet.ru