The answer is no.
Here's some information on battery charging that explains why.
First a word about Amps(A) vs. Watts (W).
Watts Law provides the relationship between Amps(A), Volts(V) & Watts(W)
A x V = W
Watts are what is important as that is POWER, just like horsepower in a car (746W + 1 HP)
USB has become the standard for powering and communicating with most devices and is driven by the Smartphone industry.
The old USB standard was 5Volts at 0.5A or 2.5W
Smartphones quickly outgrew that standard and 5V@2.1A (10W) became the common charger specification.
Then along came Quick Charge technology. Without going into proprietary technologies let's go directly to the USB standard USB PD (power delivery). USB PD has gotten so complicated that the USB Standards Committee has given it a standard all its own. USB PD is now at version 3.1 (2021) but Version 3.0 is more common with cameras.
USB PD 3.0 blows past the old 5V standard with voltages of 9V, 12V, 15V & 20V, & currents as high as 5A. Higher voltages are required to keep Amps lower at high power (Watts). Amps are what make wires hot.
High power chargers that meet the USB PD 3.0 standard are 100W (20V@5A).
Now here's the two important facts.
1) A device such as your action camera will only draw the amount of current that it needs.
You can't overpower a device by connecting to a charger capable of high current.
Note that you can overpower it with voltage.
If you try to power your camera from a 12V source such as an automotive battery you will likely smoke the device.
In summary - lots of amps OK, lots of volts Bad.
2) In order to utilize the high power charging your device MUST support the quick charge technology.
If your camera does not support USB PD then it will only use the older USB power levels.
That’s because USB PD protocol requires "handshaking" communication with the device to let it know how much power to deliver.
Captain “Camera” Kirk, "Scotty - how much power can you deliver?)"
PD Scotty, "I can deliver 100watts, how much can you handle?"
Captain Kirk, "I am limited to the 9V 3A (27 Watt) spec."
PD Scotty, "OK captain, 27 watts it is."
The Insta360 does not support USB-PD. Insta360 spec calls for a 5V3A charger but it does not draw anywhere near 3A.
The new Insta360 ACE PRO does support USB PD and will charge the battery very quickly.
Typical 100W charger SPECIFICATIONS
Note the proprietary Quick Charge Protocols such as Qualcomm Quick Charge and Apple quick charge.
Charging Ports
3 USB-C + 1 USB-A
Input
100-240V ∿, 50 / 60 Hz 1.5A
Single-Port Output
USB-C1: Max 50W (5V3A, 9V3A, 12V3A, 15V3A, 20V2.5A)
USB-C2/C3: Max 100W (5V3A, 9V3A, 12V3A, 15V3A, 20V5A)
USB-A: Max 30W (5V3A, 9V3A, 12V2.5A, 20V1.5A)
Total Output
Max 100W
Protocol
USB-C Ports: PD3.0, PD2.0 / QC4+, QC4, QC3.0, QC2.0 / PPS / AFC / SCP, FCP / Apple 2.4A / BC1.2
USB-A Port: QC3.0, QC2.0 / AFC / SCP, FCP / Apple 2.4A / BC1.2