A simple back of the envelope calculation shows that Felix causes between 70 and 110 tonnes of CO2 emissions per year just from flying. Paris accord says 1.5t per person per year, from all activities, Felix's flying alonre is ~10-15x current European yearly per person emissions and ~50-75x those compatible with +1.5C.
There is a section comparing flight emissions to US citizen average total emissions. This might make him feel good, but only 30% of an average American's emissions come from transportation and just a sliver from flying, so it's very likely his total emissions are much higher.
Some — eg. those who've moved for work — probably fly 10-15x the average, and 10-15x of people fly 1/100th of average. Flying cost and availability correlate with average needs, but that presupposes that some people have higher needs altogether.