**Describe the situation**
https://markify.dev/p/zfrQMV2/text

**How to reproduce**
On aws `c5ad.24xlarge` run a query:

```
SET max_memory_usage = '100G', max_threads = 1000, max_insert_threads = 96

INSERT INTO wikistat WITH
    parseDateTimeBestEffort(extract(toLowCardinality(_path), 'pageviews-([\\d\\-]+)\\.gz$')) AS time,
    splitByChar(' ', line) AS values,
    splitByChar('.', values[1]) AS projects
SELECT
    time,
    projects[1] AS project,
    projects[2] AS subproject,
    values[2] AS path,
    CAST(values[3], 'UInt64') AS hits
FROM s3('https://....s3.eu-central-1.amazonaws.com/wikistat/original/*.gz', '...', '...', LineAsString, auto)
WHERE length(values) >= 3
```

Performance is not bad (22 million rows are inserted per second) but can be better.
{
                assertString("TRUE", buf);
                x = true;
                break;
            }
            else
                [[fallthrough]];
        }
        case 'F':
        {
            if (support_upper_case)
            {
                assertString("FALSE", buf);
                x = false;
                break;
            }
            else
                [[fallthrough]];
        }
        default:
            throw ParsingException("Unexpected Bool value", ErrorCodes::CANNOT_PARSE_BOOL);
    }
}
enum class ReadIntTextCheckOverflow
{
    DO_NOT_CHECK_OVERFLOW,
    CHECK_OVERFLOW,
};
template <typename T, typename ReturnType = void, ReadIntTextCheckOverflow check_overflow = ReadIntTextCheckOverflow::DO_NOT_CHECK_OVERFLOW>
ReturnType readIntTextImpl(T & x, ReadBuffer & buf)