Is attributing the statement "designating Laylat al-Qadr with abundant charity is an innovation" to Sheikh Ibn Uthaymeen accurate? And does this mean that it is impermissible to give charity during the last ten days of Ramadan, seeking Laylat al-Qadr?

This statement is correct and attributed to Sheikh Ibn 'Uthaymeen, as he determined that singling out charity or 'Umrah (definition) for Laylat al-Qadr is an innovation (bid'ah), because it involves singling out an act of worship for a time that the Lawgiver did not specify for it. Rather, the Lawgiver encouraged standing (in prayer) during Laylat al-Qadr. Some jurists, however, have held that there is no harm in increasing charity during the nights in which Laylat al-Qadr is hoped for.