[nitrogen]

1. It is limiting: no static linking or you have to distribute re-linkable object files (LGPL section 4.d.)

Static linking is fairly uncommon; it's more common to distribute the versions of DLLs you require on Windows, or use a package dependency on specific versions (or provide your own copies) of the system-provided libraries on Linux.

3. Section 6 says all these can be changed anytime, potentially making it more restrictive (see GPL v3).

Section 6 of LGPL3 does not say that; it says that you have the option of choosing a later version. Any code released under "GPLv2 or later" can still be used under GPL2.

https://www.gnu.org/licenses/lgpl.html