While this is mostly true, it is just untrue enough to cause trouble for a non-negligible number of apps.
The Intel Houdini software used to make Android on X86 possible is a marvel of engineering but it is not perfect. I worked for a company that made an Android tablet around an Intel chip instead of ARM. We were hit with a great number of user reports of certain apps crashing, overheating, or simply refusing to run in the first place. We verified in QA that these apps would work just fine on ARM tablets with the same Android version and similar specs.
To be fair to Intel, they were very good to work with and really did (and do) want to make it work. I have no doubt they will. Eventually.
The Intel Houdini software used to make Android on X86 possible is a marvel of engineering but it is not perfect. I worked for a company that made an Android tablet around an Intel chip instead of ARM. We were hit with a great number of user reports of certain apps crashing, overheating, or simply refusing to run in the first place. We verified in QA that these apps would work just fine on ARM tablets with the same Android version and similar specs.
To be fair to Intel, they were very good to work with and really did (and do) want to make it work. I have no doubt they will. Eventually.