I agree that ICT will help development massively, but that's Kenya and to a certain extent Tanzania.
ICT makes up around 15% of Kenya's exports and 10% of Uganda's, and they've both been working hard on actually building a both a strong tech industry and a strong financial industry.
Tanzania doesn't have as same a size of tech industry as Kenya or Uganda, but has been investing a massive amount on building that muscle. They also have a fairly decent industrial economy for their relative position as a LDC.
Rwanda just doesn't have a similar base or bureaucrat class as Tanzania or Kenya or Uganda. Also, Rwanda doesn't actually have a tech industry. The handful of tech companies that are even there are Indian and Chinese run MSPs there to help Indian and Chinese conglomerates that temporarily setup shop there.
I'm sticking with my hypothesis that info tech will let Africa develop faster than most expect though. AI probably even more so.