A pair of devices (which are not described as being able to kill) likely planted by a single individual isn't indicative of the intent of the much larger majority.
Theft is extremely common in large disorgamized events like this and is, again, not indicative of some greater plan by the majority.
Mentioning 5 dead is very misleading, given two died of natural causes, one of accidental trampling (common in dense disorganized crowds) and one was shot by capitol police. Only the policeman and the shot women are indicative of anything coup-like.
The proportion of invaders seriously going to attempt to forcefully take control of the government was likely pretty small.
I believe those would also hold they were attempting to ensure the legitimate president continued power (e.g. they believed they were trying to uphold the "real" election results, rather than overturn an election). Is it a coup if the people doing it don't believe it's a coup? And aren't attempting violence (for the 99%)?