For your consideration ...
No it is not, and however .... a large proportion of glutamates present in most natural foods are bound to other proteins, (aka the whole of the natural product). This results in a slow release of the substance that the body is well-equipped to handle. Most of the naturally-occurring glutamate in foods is bound to other amino acids.
No foods naturally contain MSG. MSG, and its analogs, is a chemical and a food additive. Glutamate, when found naturally occurring in food is called 'Bound glutamic acid/glutamate' and is processed in the body without problems unless you are sensitive to glutamate.
MSG - monosodium glutamate, a chemical, when broken down by the body becomes 'free-glutamate' or free glutamic acid - it is unbound - this means that the glutamate, or glutamic acid which is a natural neurotransmitter in the body, becomes an EXCESS to the bodily requirements. This causes an overexciting of brain neurons, which literally causes the death of brain cells, also known as an 'Excitotoxin', a scientific term coined by neurosurgeons such as Russell Blaylock.
So, no. No foods naturally contain the chemical MSG.
Think of it like this: Which is better for you? The whole apple, with all its fiber, helping to control, slows, the release of its sugars, which reduces the spiking of blood sugar. Or drinking apple juice that is absent that fiber, and is mostly apple flavored sugar water which will, and does, spike blood sugars?
So why add in an additional man made, analogous to MSG, chemicals, (excitotoxins), which will give far more quantities that your body can handle, and cause possible harm, than you would get from that found in natural foods, which don't cause any issues, unless one is naturally sensitive to that natural food containing glutamates?