The man is in 1st with the youngest squad in the league, with no squad depth, lost their primary striker and are somehow still 5 points clear. He already HAS performed miracles.
And its clown ass Football Manager ass thinking that makes folks like you think that NOT spending 200m+ in fukkING JANUARY, means you're not a "serious club".
You know who also didn't do that shyt? Prime Pep-era Barcelona. They added players in where they had gaps and hardly ever for 60m+ even when adjusted for inflation. Many of their top players in that era were brought in for around 50m adjusted for inflation.
Real Madrid...the most SERIOUS club of them all...do you know how many times they've spent over 80m on one player in the last decade?
Twice (Bale & Hazard)
And you expect Arsenal, a team with no where near those level of resources, that DOES NOT HAVE UCL FUNDS THIS SEASON, to spend in the same league as Manchester City and Real Madrid?
You're talking out of your ass, you have no idea what being a "serious club" even means.