Kernel starts up very slowly on Linux

Question

V 12.1.1, starting a kernel, e.g. by entering wolframscript in the shell, takes an unexpectedly long time (~5 min, the time elapsed between pressing Enter and the showing-up of In[1] := ); but the same operation for V 12.0 takes merely ~3 sec.
I wonder if I am the only one experiencing this.

Update
Also, inspired by @Ordinaryusers68 's answer, I find these two posts:

Is there a way to turn off paclet updating altogether? [duplicate]

Paclets updating awareness and tracking

where, an option -nopaclet is mentioned when starting the kernel.

A little mouse on the pampas · Accepted Answer

I don’t know if the problem you encountered is the same as the problem described in this post. If the same, you need to disable automatic updates.
This failure is caused by the paclet update system. Just turn off this automatic update. The easiest way to close the update is to delete the "PacletSiteData_10.pmd2" file.

Kernel starts up very slowly on Linux

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