The cliffhanger was a misdirection to the TVA and the audience. We were meant to think that the time-line bombing would be the major consequence but they telegraphed that she was going after the time keepers. The agent she kidnapped mentioned that she gave up their location right before the bombing and Sylvie leaving. The bombing wasn't the important part. It was meant to overwhelm the TVA work force to leave less security near the time keepers.
A misdirect just for the sake of a cliffhanger is bad writing. Sherlock dies in one episode to be alive the next. It isn’t brushed over. They explain why he took precautions to fake his death which reveals his character and thinking.
Sylvie killed the agents in episode 1 and in the start of two we see her do it again but take one agent and the nature of her powers. We learn something about the previous scene we didn’t. The threat is heightened. That’s good buildup.
The problem with the time bomb is that undercut her character. Not only was it a nothing burger it was hyped up as, Renslayer wasn’t fooled by it. So not only was Sylvie neutralized , but the plan she spent all her life developing was a mere nuance. We never learn how Renslayer knew it was a trick. The TVA plot was undercooked to end the episode on another cliffhanger of something we already knew wouldn’t work in Lamentis.
So this dangerous variant was turned into a paper tiger throwing hissy fits on Lamentis-1.