People here are underestimating just how good Giannis (30/11.5/6), Embiid (30/11/4.5) and Jokic (26/14/8) have been this year, plus all are far more efficient scorers than Tatum, plus Embiid/Giannis are 1st team level defenders (and Jokic seems to have improved immensely at that end). Not to mention Durant (29/7/6), who remains the most efficient high volume scorer in the league when he's on the court, and guys like Lebron (30/8/6), Luka (28/9/8.5), Curry (25.5/5/6) and Ja (27.5/5.5/6.5). They can't really compare defensively, but offensively they're in the conversation. Not to mention the shitheads (Harden is averaging 23/8/10) and injured guys like Davis and Kawhi (not to mention the veterans who a lot of people might put over Tatum, like Derozen, Dame, Butler).
The advanced stats like him more than most, but no national outlet (and I mean none of them) has had Tatum in the top 10 when they do their rankings. In their midseason tier rankings, the athletic had Tatum in the 4th tier, ranked 13-16. The Ringer did their midseason rankings a few weeks ago, Tatum was 12th. NBC sports midseason rankings had Tatum 13th. CBS sports has him 12th. Sporting news has him 14th. SI has him 13th.
The advanced stats like him more, but I'm not putting all my weight behind those just yet (I see RAPTOR has him ranked 2nd, but it also has VanVleet ranked 6th. So, yeah). He's been consistently ranked in the 11-14 range, and has a good chance of making 2nd team all-NBA because some of the guys in front of him (Durant, Davis) have missed too much time to really make the team. Maybe it's just consistency that he needs to improve on, but yes, if he averages an efficient 28/8/4, stays durable and plays borderline all-NBA level D (he's not making an all-defense team this year, whether he deserves to or not), he'll start being considered a top 10 player when people actually sit down and make their lists. There are a lot of great players in the NBA right now, and it takes a lot to crack that top group.