Is the following battery consumption considered normal?

Some notes from a.i response and web-search:

The DC internal resistance of a lithium-ion battery increases with the
increase of the depth of discharge (DOD). Within the discharge range
of 10% to 80%, the internal resistance remains relatively constant.
The internal resistance increases significantly at deeper discharge
depths.

Cold temperature increases the internal resistance on all batteries

Chemical Processes: The chemical processes within the battery become less efficient as it discharges. This inefficiency leads to a more rapid decline in voltage as the battery approaches depletion.

Increased Internal Resistance: Batteries also have internal
resistance, which impedes the flow of current. This resistance
typically increases as the voltage falls. With higher resistance, more
energy is wasted as heat, further reducing the available power to your
device and accelerating the voltage drop.

As the battery discharges, the movement of lithium ions within the cell decreases, leading to higher resistance.

I think as to whether the graph is normal or not, depends highly on what apps you have installed. And as to whether that is normal gadgetbridge type usage/behaviour. The curve on the left where you had it sitting does look pretty. But also it could be that usage means that the Display is turning on/off , so power draw would fluctuate a lot with that type of usage, or other peripherals like gps eg. Other obvious thing is ensuring wake on tap is not active, known to wake too often.

I think your graph on right just represents typical usage of a device. But you'd have to do more digging to be sure, there are some apps on the appstore that monitor power usage/current by seeing which peripherals are active.

And a best test scenario would be with as little as possible installed as Gordon mentioned, a clean base.