2. no ... technomancers didn't get as much love as I wanted to give them due to space limitations in the book, they are definitely matrix powerhouses.
In 5E TMs usually had 3 ways of doing a Matrix thing. Thread a CF, Order a Sprite, or just Hack it. And they had to pay for all three of those things because Threading and Sprites both had gaps that couldn't be covered (Until Kill Code came out).
Couple that with Living Persona Limits, and less access to dice pool Augmentations TMs were is rough shape for a long while.
If TMs have a Resonance action for everything in the Matrix, they're probably in good shape. *or* if they have access to similar but different Hacking Dice Pool buffs as Deckers, then they'll be fine as well.
In 5th, the Primed Charge CF caught TMs Hacking pools up to Deckers. But there was still a gap in Resonance actions, couldn't get a Mark on a Host (Technoshaman Stream/Greater Sprite was the only way), and File Protection / Data Bombs didn't have a RAW way around them unless the GM let the Editor CF bypass them (decent argument for allowing that). So essentially, you needed to still be a red-hot Hacker to handle Hosts and some files, and still needed Threading, Compiling, Registering, and a high Resonance. So you wound up behind on Skill points, SAPs, and Attributes compared to a Decker. It was a tough gap to overcome.