Linux is down slightly after a peak month, but probably that month had Linux over-represented. This month we see English down a bit too, Chinese is up a little.
https://store.steampowered.com/hwsurvey/Steam-Hardware-Software-Survey-Welcome-to-Steam
https://www.gamingonlinux.com/steam-tracker/
I copied the data from gamingonlinux and put it into my own sheet with an exponential trendline (red) and a moving average line (green) to smooth out the variance of the survey. We’re definitely trending upwards.

Here’s the csv data
0.78, 0.72, 0.80, 0.82, 0.82, 0.77, 0.82, 0.81, 0.84, 0.76, 0.79, 0.80, 0.83, 0.83, 0.81, 0.83, 0.90, 0.83, 0.87, 0.89, 0.91, 0.88, 0.86, 0.89, 0.94, 0.90, 0.90, 0.78, 0.91, 0.81, 0.85, 0.85, 0.86, 0.89, 1.00, 1.02, 1.05, 1.13, 1.16, 1.11, 1.06, 1.02, 1.00, 1.14, 1.12, 1.18, 1.23, 1.27, 1.23, 1.28, 1.44, 1.38, 1.38, 1.27, 0.84, 1.32, 1.47, 1.44, 1.96, 1.82, 1.63, 1.39, 1.91, 1.97, 1.95, 1.76, 1.94, 1.90, 2.32, 2.08, 2.08, 1.92, 1.87, 2.00, 2.03, 2.29, 2.06, 1.45, 2.33, 2.27, 2.69, 2.57, 2.89, 2.64, 2.68, 3.05, 3.20, 3.58, 3.38, 2.23, 5.33, 4.52


Both february and march were outliers. Their average is consistent with the overall trend. Probably Valve messed something up.
There was a lot of variance with the Chinese New Year, as usual for this season