No, definition of reverse charge given in section 2(98) refers only to section 9(3) and section 9(4). Tax payment by ecommerce operator in case of specified services under section 9(5) would not be a case of reverse charge but a new specie because the e commerce operator facilitates the supply through the digital network and collects payment from recipient and passes it on to supplier.
(ICAI FAQ PUBLICATION 06-09-2017 REVERSE CHARGE: FAQ NO. 26)