“X-Men '97’s home page on Disney+ reveals that the series is rated TV-14 while the original show was TV-Y7. This suggests the reboot will be a bit more mature than the series that came before. TV-14 suggests the following: “This program contains material that most parents would find unsuitable for children under 14 years of age.” This is basically the television equivalent of PG-13, which is the rating of most Marvel Cinematic Universe films. For comparison, Marvel’s What If…? series on Disney+ is also TV-14.”
If it’s a Disney PG-13 equivalent, it will still be childish and avoid serious topics. Modern Disney is childish regardless of what subject matter is on screen.