system
Given the following post, respond as if you're commenting on Reddit:
human
[Doctor Who] Why didn't the Time War destroy the space-time continuum?

When the Doctor's TARDIS exploded it caused cracks in the fabric of the universe all across time and space.  The Doctor's TARDIS is an obsolete Type 40.  Gallifrey fought a war across time and space wherein hundreds if not thousands or more TARDIS' that were more powerful than the Doctor's were destroyed.

So, if one TARDIS going boom cause cracks across time and space why wasn't that damaged magnified a thousand and more fold by the casualties of the Time War?
gpt
Several possible explanations of varying plausibilities and speculativities:

- The Doctor's TARDIS may have been intentionally destroyed in a specific, time-rupturing manner that could not, in a normal combat situation, occur.

- The manner in which the Doctor's TARDIS was destroyed may have been easily preventable by another Time Lord with another TARDIS, so as long as there were multiple Time Lords around, such a cataclysm could have been prevented.

- Most TARDISes may have been far less important in the history of the universe. TARDISes don't necessarily exist in linear time (Sexy remembered future console rooms), so the destruction of a TARDIS could cause its whole history to come undone. The Doctor has saved the universe many times over, so destroying his TARDIS and undoing his good works could have torn history to shreds.

- As each TARDIS contains an aspect of the Eye of Harmony, which is said to regulate the Web of Time itself, the Doctor's TARDIS may have contained the only remaining aspect of the Eye in the entire universe. With the main Eye sequestered away with Gallifrey and no other TARDISes containing aspects of the Eye in existence, it is possible that the violent destruction of the only remaining aspect was enough to rupture the Web of Time itself.