From: Nancy Gish

I have no idea what this is supposed to demonstrate since Eliot has no
consistent point of view on the use of personal experience.  But that he
repeatedly asserted the personal origins of TWL is not simply a description
of "embryology" when events in his life and feelings he had and experiences
he acknowledges are consistently present in the poems.
From Peter Montgomery,

Of course Eliot's personal experience is in the poem, but it is transmuted
into the poetic needs of the poem, and is very hard to identify as his
personal experience. If you could not bring external evidence as from the
original manuscript or comments made by Eliot outside the poem,
your point about its being a personal staement just wouldn't hold up.

What matters is what is in the poem itself. The rest is just interesting
I find very little evidence specifically about WWI itself in the poem. In
I can find more evidence about 9/11 than WWI.