Shia hadith books disappeared

[sameer]

“During the time of Sheikh Sudooq there were Five big books of Ahadees. The 5th one was ‘Madina-tul-Ilm’ which consisted of Twelve Volumes, and it was the biggest book of Ilmul-Hadees, which disappeared…………Imam Sadiq (s.a.) narrated Four Hundred Books of Ahadees, named ‘Usool-e-Arbamia’, all of them are not with us anymore.”
(Ijtihad o Taqleed P69)

if its true thn how these important books can be disappeared, no burning or stolen evidence presented so far? or may be went into occultation nd will appear again near the end of time ?

[Hani]

they never took care of their books and the above is a scandal since they lost one of their main books.

[sameer]

yeh no doubt about it but they show their ignorance by quoting us a hadith where piece of paper eaten by goat  but on the other hand none of them really took care of whn they had lost their biggest collection of ahdeeth books or at least put their sincere effort to collect these again?