The NRA was once the good guy.

[Beastly Boy]

11. Do you personally meet all these qualifications? How many US gun owners would?

From the Wikipedia page you cited:

Obtaining a license

An applicant applies for a gun license at a designated local office of the National police. If the conditions of age, qualification, health clearance, criminal integrity and personal reliability are met and a fee of 700 CZK (US$ 30.52) per type is paid, the license shall be issued in thirty days.[18] The license must be renewed every ten years[13] (no need to undergo qualification exam if the application is filed at least two months before termination of the previous license; health clearance still necessary[19]).
Age

To obtain a B or C type license, the applicant must be at least 18 years old. Under special circumstances, the applicant need only be 15 if a member of a sporting club, or 16 if taught hunting in schools with such a curriculum. To obtain an A, D or E type license, the applicant must be 21.[20]
Qualification
Apart from gun legislation, the theoretical part of the exam focuses also on first aid
Field strip is usually required to demonstrate "safe handling"

Obtaining the license requires passing a theoretical and practical exam.

Theoretical exam: The theoretical exam consists of a written test of 30 multiple choice questions (Created and distributed by the Ministry of the Interior) with a maximum of 79 points possible. To pass the written exam, 67 points are needed for typey A, 71 for type B or C, and 74 for type D or E.[21] The test deals with the following issues:

knowledge of firearms legislation,[22]
knowledge of legislation related to legitimate use of firearm (e.g. self-defense),[23]
general knowledge of firearms and ammunition,[24] and
first aid.[25]

Practical exam

Safe handling:[26] this comprises

inspecting, whether the firearm is loaded (safely unloading),[27]
field stripping as needed for clean-up,[28]
preparation of firearm and ammunition for shooting, shooting, procedure of handling the firearm in case of malfunction, conclusion of shooting.[29]

Touching the trigger, pointing in different than appointed safe direction or trying to field strip loaded gun (dummy round is used) results in the applicant failing the exam. Depending on the types of licenses sought, applicants may be asked to show their ability of safe manipulation on multiple firearms (typically CZ 75 and/or CZ 82 pistol, bolt-action CZ 452 rifle and a double-barreled shotgun).[30]

Shooting test,[31] which requires specific scores dependent on the type of license applied for:

For the B type license it is 25m on rifle target (A4 sheet sized) with 4 out of 5 rounds hitting the target sheet shooting from a rifle (2 out of five for A type). .22 Long Rifle chambered rifle is used.[32] Alternatively, an applicant can shoot a pistol on 50/20 pistol target at 10 m.
For the C type license, the applicant must fires at 25m with a rifle (same as cat. B) and also successfully hit the rifle target from the distance of 25m shooting from a shotgun (Usually double-barreled), 3 out of 4 rounds must hit the target (at least partially).[33]
For the E type license, the applicant must successfully hit the international pistol target 50/20 (50 cm x 50 cm) from a distance of 10m (15m for D type license) shooting from a pistol, 4 out of 5 rounds must hit the sheet (2 out of 5 for A type).[34]

In each of the cases above, the actual score is irrelevant; the projectiles simply have to hit the target sheet within the circles.[35] Also in each case, the applicant is allowed 3 test shots to familiarize with the particular firearm used for the test. The shotgun is an exception to this, where only one round is allowed as a test shot.[36

I wouldn't object to the indiscriminate gun ownership in the US if every gun owner went through the same process before obtaining a firearm.