Which of the following statements is not correct?

The addition of acetylene to lithium amide dissolved in ether produces ${\mathrm{NH}}_3\text{ and }\mathrm{HC}\equiv \overline{\mathrm{C}}{\mathrm{Li}}^{+}$.

If water can generate $\mathrm{HC}\equiv \mathrm{CH}\text{ from }\mathrm{HC}\equiv \mathrm{CLi}$ then water must be a stronger acid than acetylene.

Acetylide ion (which has a pair of electrons in $\mathrm{sp}$ orbital of carbon) is more stronger base than ethide ion, ${\mathrm{C}}_2{\mathrm{H}}_5^{-}$ (which has a pair of electrons in ${\mathrm{sp}}^3$ orbital of carbon).

Lindlar catalyst is $\mathrm{Pb}/{\mathrm{BaSO}}_4$.